lichen planus pemphigoides

description: Lichen planus (LP) pemphigoides is a rare cross-over syndrome between lichen planus and bullous pemphigoid.


frontal fibrosing alopecia

category: biolink:Disease biolink:DiseaseOrPhenotypicFeature biolink:BiologicalEntity biolink:ThingWithTaxon biolink:NamedThing

description: Frontal fibrosing alopecia (FFA) is a rare variant of lichen planopilaris characterized by symmetrical, progressive, band-like anterior hair loss of the scalp.


inhalational botulism

description: Inhalational botulism is a man-made form of botulism, a rare acquired neuromuscular junction disease with descending flaccid paralysis caused by botulinum neurotoxins (BoNTs).


iatrogenic botulism

description: Iatrogenic botulism is the most recent man-made form of botulism, a rare acquired neuromuscular junction disease with descending flaccid paralysis caused by botulinum neurotoxins (BoNTs), and it may occur as an adverse event after therapeutic or cosmetic use.


name: multiple congenital anomalies due to 14q32.2 maternally expressed gene defect

description: A rare genetic disease characterized by polyhydramnios (mostly due to placentomegaly), fetal macrosomia, abdominal wall defects, skeletal abnormalities (including bell-shaped thorax, coat-hanger appearance of the ribs and decreased mid to wide thorax diameter ratio in infancy), feeding difficulties and impaired swallowing, dysmorphic features (hairy forehead, full cheeks, protruding philtrum, micrognathia), developmental delay and intellectual disability. Additional features may include kyphoskoliosis, joint contractures, diastasis recti, muscular hypotonia. There is increased risk of hepatoblastoma.


name: paternal 14q32.2 hypomethylation syndrome


name: maternal 14q32.2 hypermethylation syndrome


complete hydatidiform mole

description: Complete hydatidiform mole is a type of hydatiform mole characterized by abnormal hyperplastic trophoblasts and hydropic villi due to fertilization of an enucleated ovocyte by one or two haploid spermatozoa that can manifest with vaginal bleeding accompanied by nausea and frequent vomiting, hyperemesis gravidarum, risk of spontaneous miscarriage, hyperthyroidism, and has the potential of developing into choriocarcinoma.


partial hydatidiform mole

description: Partial hydatiform mole is a type of hydatiform mole characterized by abnormal hyperplastic trophoblasts and hydropic villi due to fertilization of a normal ovocyte by two spermatozoa or one abnormal spermatozoon (allowing for some fetal development), and that manifests with vaginal bleeding accompanied by nausea and frequent vomiting, hyperemesis gravidarum, hyperthyroidism and risk of spontaneous miscarriage.


epithelioid trophoblastic tumor

description: An epithelioid trophoblastic tumor is an extremely rare gestational trophoblastic tumor (GTT) which generally occurs several years after pregnancy.


pyruvate metabolism disorder

description: An inherited metabolic disease that is has its basis in the disruption of pyruvate metabolic process.


tricarboxylic acid cycle disorder

description: An inherited metabolic disease that is has its basis in the disruption of tricarboxylic acid cycle.


name: mitochondrial DNA depletion syndrome, encephalomyopathic form

description: Mitochondrial DNA depletion syndrome, encephalomyopathic form is a group of mitochondrial DNA maintenance syndrome diseases characterized by predominantly neuromuscular manifestations with typically infantile onset of hypotonia, lactic acidosis, psychomotor delay, progressive hyperkinetic-dystonic movement disorders, external ophtalmoplegia, sensosineural hearing loss, generalized seizures and variable renal tubular dysfunction. It may be associated with a broad range of other clinical features.


name: mitochondrial membrane transport disorder


name: mitochondrial substrate carrier disorder


description: Maternally-inherited mitochondrial dystonia is a rare neurological mitochondrial DNA-related disorder characterized clinically by progressive pediatric-onset dystonia with variable degrees of severity.


pure mitochondrial myopathy

description: Pure mitochondrial myopathy is a rare mitochondrial disease characterized by exclusive skeletal muscle involvement, without clinical evidence of other organ involvement, manifesting with progressive limb weakness, proximal limb muscle atrophy, and eye muscle anomalies (e.g. ocular motility restriction, ptosis). Patients may present with lactic acidosis, diffuse myalgia and overall fatigability (particularly during/after physical activities), dysphagia, and diminished deep tendon reflexes.


name: autosomal recessive progressive external ophthalmoplegia

description: Autosomal recessive form of progressive external ophthalmoplegia.


name: renal tubulopathy-encephalopathy-liver failure syndrome

description: Renal tubulopathy - encephalopathy - liver failure describes a spectrum of phenotypes with manifestations similar but milder than those seen in Gracile syndrome and that can be associated with encephalopathy and psychiatric disorders.


dopa-responsive dystonia

description: Dopa-responsive dystonia (DRD) describes a group of neurometabolic disorders characterized by dystonia that typically shows diurnal fluctuations, that responds excellently to levodopa (L-dopa) and that is comprised of autosomal dominant dopa-responsive dystonia (DYT5a), autosomal recessive dopa-responsive dystonia (DYT5b) and dopa responsive dystonia due to sepiapterin reductase (SR) deficiency.


maternally-inherited Leigh syndrome

description: Maternally inherited Leigh syndrome is a rare subtype of Leigh syndrome characterized clinically by encephalopathy, lactic acidosis, seizures, cardiomyopathy, respiratory disorders and developmental delay, with onset in infancy or early childhood, and resulting from maternally-inherited mutations in mitochondrial DNA.


Meier-Gorlin syndrome

description: Ear-patella-short stature syndrome is an association of malformations including bilateral microtia (severe hypoplasia of ear pinnae), absent patellae, short stature, poor weight gain, and characteristic facial features such as high forehead, micrognathism with full lips and small mouth, and accentuated nasolabial folds (smile wrinkles linking the nostrils to the labial commissure).


Mikati-Najjar-Sahli syndrome

description: Mikati-Najjar-Sahli syndrome is characterized by microcephaly, hypergonadotropic hypogonadism, short stature and facial dysmorphism (a narrow forehead, hypertrophy and fusion of the eyebrows, micrognathia and pinnae abnormalities).


name: Moebius syndrome-axonal neuropathy-hypogonadotropic hypogonadism syndrome

description: This syndrome is characterized by the association of Moebius syndrome (congenital facial palsy with impaired ocular abduction) with peripheral axonal neuropathy and hypogonadotropic hypogonadism.


Moyamoya disease

description: Moyamoya disease (MMD) is a rare intracranial arteriopathy involving progressive stenosis of the cerebral vasculature located at the base of the brain causing transient ischemic attacks or strokes.


name: shoulder and girdle defects-familial intellectual disability syndrome


name: myalgia-eosinophilia syndrome associated with tryptophan

description: A rare systemic disease characterized by severe myalgia and peripheral eosinophilia associated with tryptophan dietary supplementation. The symptoms do not subside after tryptophan discontinuation. Clinical presentation includes muscle tenderness and cramps, fatigue, weakness, paresthesia, peripheral edema, arthralgia, dyspnea, skin rash, dry mouth, and development of scleroderma-like skin abnormalities.


mycetoma

description: Mycetomas are subcutaneous inflammatory pseudotumors containing fungal or actinomycetic (bacteria with branched filaments) granules or grains.


infantile myofibromatosis

description: A benign, multifocal, nodular and well-circumscribed neoplasm usually seen as a congenital neoplasm or in the first year of life. It is characterized by a biphasic growth pattern and is composed of small, undifferentiated mesenchymal cells associated with branching thin-walled vessels and more mature neoplastic spindle cells with abundant eosinophilic cytoplasm in a collagenous stroma.


name: mitochondrial myopathy-lactic acidosis-deafness syndrome

description: Mitochondrial myopathy-lactic acidosis-deafness is a type of metabolic myopathy described only in two sisters to date, presenting during childhood, and characterized clinically by growth failure, severe muscle weakness, and moderate sensorineural deafness and biochemically by metabolic acidosis, elevated serum pyruvate concentration, hyperalaninemia and hyperalaninuria. There have been no further descriptions in the literature since 1973.


name: methylmalonic aciduria and homocystinuria

description: An inborn error of vitamin B12 (cobalamin) metabolism characterized by megaloblastic anemia, lethargy, failure to thrive, developmental delay, intellectual deficit and seizures. There are four complementation classes of cobalamin defects (cblC, cblD, cblF and cblJ) that are responsible for methylmalonic acidemia - homocystinuria (methylmalonic acidemia - homocystinuria cblC, cblD cblF and cblJ).


name: myopathy-growth delay-intellectual disability-hypospadias syndrome


description: Congenital autosomal recessive sideroblastic anemia (ARSA) is a non-syndromic, microcytic/hypochromic sideroblastic anemia, present from early infancy and characterized by severe microcytic anemia, which is not pyridoxine responsive, and increased serum ferritin.


familial visceral myopathy

description: A rare hereditary myopathic degeneration of both gastrointestinal and urinary tracts that causes chronic intestinal pseudo-obstruction. It usually presents after the first decade of life with megaduodenum, megacystis and symptoms such as abdominal distension and/or pain, vomiting, constipation, diarrhea, dysphagia, and/or urinary tract infections.n.


Emery-Dreifuss muscular dystrophy

description: Emery-Dreifuss muscular dystrophy (EDMD) is characterized by muscular weakness and atrophy, with early joint contractures and cardiomyopathy.


name: distal 7q11.23 microduplication syndrome

description: Distal 7q11.23 microduplication syndrome is a rare chromosomal anomaly characterized by a predominantly neuropsychiatric phenotype with a few dysmorphic characteristics. Speech delay, learning difficulties, attention deficit hyperactivity disorder, bipolar disorder and aggressiveness have been reported.


14q12 microdeletion syndrome

description: 14q12 microdeletion syndrome is a recently described syndrome characterized by severe intellectual deficit, with a normal neonatal period, followed by a phase of regression at the age of 3-6 months.


16p11.2p12.2 microduplication syndrome

description: 16p11.2p12.2 microduplication syndrome is a rare chromosomal anomaly syndrome resulting from the partial duplication of the short arm of chromosome 16 with a highly variable phenotype typically characterized by developmental/psychomotor delay (particularly of speech), intellectual disability, autism spectrum disorder and/or obsessive and repetitive behavior, behavioral problems (such as aggression and outbursts), dysmorphic facial features (triangular face, deep set eyes, broad and prominent nasal bridge, upslanting or narrow palpebral features, hypertelorism). Additionally, finger/hand anomalies, short stature, microcephaly and slender build are frequently described.


14q11.2 microduplication syndrome

description: 14q11.2 microduplication syndrome is a rare chromosomal anomaly characterized by developmental delay, mild to severe intellectual disability with speech impairment and epilepsy. Additionally, it may include dysmorphic features (such as hypo- or hypertelorism, dysplastic ears, short palpebral fissures), microcephaly or macrocephaly, behavioral abnormalities, stereotyped hand movements, ataxia, hypotonia, cleft palate.


16p13.11 microdeletion syndrome

description: 16p13.11 microdeletion syndrome is a recently described syndrome characterized by developmental delay, microcephaly, epilepsy, short stature, facial dysmorphism and behavioral problems.


16p13.11 microduplication syndrome

description: 16p13.11 microduplication syndrome is a recently described syndrome associated with variable clinical features including behavioral abnormalities, developmental delay, congenital heart defects and skeletal anomalies.


16q24.3 microdeletion syndrome

description: 16q24.3 microdeletion syndrome is a recently described syndrome associated with variable developmental delay, facial dysmorphism, seizures and autistic spectrum disorder.


distal 17p13.3 microdeletion syndrome

description: Distal 17p13.3 microdeletion syndrome is a rare partial monosomy of the short arm of chromosome 17 with a variable phenotype characterized by prenatal and postnatal growth retardation, developmental delay, mild intellectual disability, macrocephaly, mild facial dysmorphisms including prominent forehead, hypertelorism, thick upper and/or lower lip vermillion, and structural abnormalities of the brain variably including white matter abnormalities, prominent Virchow-Robin spaces, Chiari I malformation, corpus callosum hypoplasia, but no lissencephaly.


trisomy 17p

description: Trisomy 17p is a rare chromosomal abnormality resulting from the duplication of the short arm of chromosome 17 and characterized by pre- and post-natal growth retardation, developmental delay, hypotonia, digital abnormalities, congenital heart defects, and distinctive facial features.


20p12.3 microdeletion syndrome

description: 20p12.3 microdeletion syndrome is a recently described syndrome characterized by Wolff-Parkinson-White syndrome, variable developmental delay and facial dysmorphism.


name: paternal 20q13.2q13.3 microdeletion syndrome

description: Paternal 20q13.2q13.3 microdeletion syndrome is a recently described syndrome characterized by severe pre- and post-natal growth retardation, microcephaly, intractable feeding difficulties, mild psychomotor retardation, hypotonia and facial dysmorphism.


20q13.33 microdeletion syndrome

description: 20q13.33 is a rare chromosomal anomaly syndrome resulting from the partial deletion of the long arm of chromosome 20 with a highly variable phenotype typically characterized by hypotonia, intellectual disability, cognitive and language deficits (including decreased or absent speech), pre and post-natal growth retardation, feeding difficulties, microcephaly, and malformed hands and feet. Neurodevelopmental disorders (including hyperactivity, social interactive problems and autism spectrum disorder), seizures and dysmorphic facial features (high forehead, hypertelorism, malformed ears, broad nasal bridge, bulbous nasal tip, thin upper lip, small chin) are frequently associated.


trisomy 20p

description: Trisomy 20p is a chromosomal disorder resulting from duplication of all or part of the short arm of chromosome 20. It is mostly characterized by normal growth, mild to moderate intellectual disability, speech delay, poor coordination and evocative facial features.


name: distal 22q11.2 microduplication syndrome

description: Distal 22q11.2 microduplication syndrome is a rare chromosomal anomaly syndrome, resulting from the partial duplication of the long arm of chromosome 22, with a highly variable phenotype principally characterized by developmental delay, intellectual disability, hypotonia, growth retardation, velopharyngeal insufficiency, mild craniofacial dysmorphism (microcephaly, tall/broad forehead, small downslating palpebral fissures, hooded eyelids, flat nasal bridge, low posterior hairline) and digital anomalies. Congenital heart malformations, visual and hearing impairment, urogenital abnormalities, behavourial problems and seizures have also been reported.


trisomy 1q

description: Trisomy 1q is a rare chromosomal anomaly syndrome, resulting from the partial duplication of the long arm of chromosome 1, with a highly variable phenotype principally characterized by intellectual disability, short stature, craniofacial dysmorphism (incl. macro/microcephaly, prominent forehead, posteriorly rotated, low-set ears, abnormal palpebral fissures, microphthalmia, broad, flat nasal bridge, high-arched palate, micro/retrognathia), cardiac defects and urogenital anomalies. Patients may also present cerebral (e.g. ventriculomegaly) and gastrointestinal malformations, as well as dystonic tremor and recurrent respiratory tract infections.


juvenile temporal arteritis

description: Juvenile temporal arteritis is a rare form of vasculitis, a group of conditions that cause inflammation of the blood vessels. Unlike the classic form of temporal arteritis, this condition is generally diagnosed in late childhood or early adulthood and only affects the temporal arteries (located at the lower sides of the skull, directly underneath the temple). Affected people often have no signs or symptoms aside from a painless nodule or lump in the temporal region. The exact underlying cause of the condition is unknown. It generally occurs sporadically in people with no family history of the condition. Juvenile temporal arteritis is often treated with surgical excision and rarely recurs.


name: atypical Norrie disease due to monosomy Xp11.3

description: Atypical Norrie disease due to monosomy Xp11.3 is a rare chromosomal anomaly syndrome, resulting from the partial deletion of the short arm of chromosome X, principally characterized by classical Norrie disease (bilateral, severe retinal malformations and opacity of the lens leading to congenital blindness, on occasion associated with progressive sensorineural deafness and intellectual disability), microcephaly, hypotonia, psychomotor and growth delay, moderate to severe mental handicap and disruptive behavior. Clinical phenotype is highly variable and immunodeficiency, epilepsy and hypogonadism have also been reported.


name: maternal uniparental disomy of chromosome X


name: paternal uniparental disomy of chromosome X


ring chromosome Y

description: Ring chromosome Y is a rare chromosome Y structural anomaly, with a highly variable phenotype, mostly characterized by short stature, partial to total gonadal failure, sexual infantilism, genital anomalies (e.g. ambiguous genitalia, hypospadias, cryptorchidism), and azoospermia or oligozoospermia. Additional reported features include speech delay, obesity, and acanthosis nigricans. Gender dysphoria and comorbid bipolar disorder have also been observed.


49,XXXYY syndrome

description: 49, XXXYY syndrome is a chromosome abnormality that occurs when a male inherits two extra copies of the X chromosome and one extra copy of the Y chromosome. The condition is extremely rare with only a handful of cases reported in the medical literature. Signs and symptoms associated with these cases include severe intellectual disability, distinctive facial features, normal to tall stature, gynecomastia, hypogonadism, and behavioral abnormalities. 49, XXXYY syndrome is likely caused by a mistake (called nondisjunction) that occurs at conception or during the formation of the sperm and/or egg. Treatment is based on the signs and symptoms present in each person.


name: Mowat-Wilson syndrome due to monosomy 2q22


name: Mowat-Wilson syndrome due to a ZEB2 point mutation


name: blepharophimosis-epicanthus inversus-ptosis due to 3q23 rearrangement syndrome

description: Blepharophimosis - epicanthus inversus - ptosis (BPES) due to 3q23 microdeletion is a form of BPES, which in addition to the classical eyelids features of BPES, present genitourinary anomalies, spastic diplegia and speech delay.


name: blepharophimosis-epicanthus inversus-ptosis due to a point mutation syndrome

description: Blepharophimosis-epicanthus inversus-ptosis (BPES) due to a point mutation is a form of BPES, characterized by the classical eyelid malformation (blepharophimosis, ptosis, epicanthus inversus, and telecanthus) which may be accompanied by growth retardation and primary ovary failure.


name: blepharophimosis-epicanthus inversus-ptosis due to copy number variations

description: Blepharophimosis - epicanthus inversus - ptosis (BPES) due to polyA expansion is a form of BPES, characterized by the classical eyelid malformation (blepharophimosis, ptosis, epicanthus inversus, and telecanthus) which may be associated with a mild ovarian involvement.


name: familial adenomatous polyposis due to 5q22.2 microdeletion


name: Alagille syndrome due to 20p12 microdeletion


name: Alagille syndrome due to a JAG1 point mutation


name: Okihiro syndrome due to 20q13 microdeletion


name: Okihiro syndrome due to a point mutation


name: Kleefstra syndrome due to a point mutation


name: partial deletion of the long arm of chromosome 12


name: partial deletion of the short arm of chromosome 1

description: Chromosome 1p deletion is a chromosome abnormality that occurs when there is a missing copy of the genetic material located on the short arm (p) of chromosome 1. The severity of the condition and the signs and symptoms depend on the size and location of the deletion and which genes are involved. Features that often occur in people with chromosome 1p deletion include developmental delay, intellectual disability, behavioral problems, and distinctive facial features. Most cases are not inherited, but people can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial deletion of the short arm of chromosome 2


name: partial deletion of the short arm of chromosome 3


name: partial deletion of the short arm of chromosome 5


name: partial deletion of the short arm of chromosome 6


name: partial deletion of the short arm of chromosome 7

description: Chromosome 7p deletion is a chromosome abnormality that occurs when there is a missing copy of the genetic material located on the short arm (p) of chromosome 7. The severity of the condition and the signs and symptoms depend on the size and location of the deletion and which genes are involved. Features that often occur in people with chromosome 7p deletion include developmental delay, intellectual disability, behavioral problems, and distinctive facial features. Most cases are not inherited, but people can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial deletion of the short arm of chromosome 8

description: Chromosome 8p deletion is a chromosome abnormality that affects many different parts of the body. People with this condition are missing genetic material located on the short arm (p) of chromosome 8 in each cell. The severity of the condition and the associated signs and symptoms vary based on the size and location of the deletion and which genes are involved. Most cases are not inherited, although affected people can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial deletion of the short arm of chromosome 10


name: partial deletion of the short arm of chromosome 11


name: partial deletion of the short arm of chromosome 16


name: partial deletion of the short arm of chromosome 19


name: partial monosomy of the short arm of chromosome 20


name: partial deletion of the long arm of chromosome 2

description: Chromosome 2q deletion is a chromosome abnormality that occurs when there is a missing copy of the genetic material located on the long arm (q) of chromosome 2. The severity of the condition and the signs and symptoms depend on the size and location of the deletion and which genes are involved. Features that often occur in people with chromosome 2q deletion include developmental delay, intellectual disability, behavioral problems, and distinctive facial features. Most cases are not inherited, but people can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial deletion of the long arm of chromosome 3


name: partial deletion of the long arm of chromosome 4

description: Chromosome 4q deletion is a chromosome abnormality that affects many different parts of the body. People with this condition are missing genetic material located on the long arm (q) of chromosome 4 in each cell. The severity of the condition and the associated signs and symptoms vary based on the size and location of the deletion and which genes are involved. Common features shared by many people with this deletion includedistinctive craniofacial features, skeletal abnormalities, heart defects, intellectual disability, developmental delay, and short stature. Most cases are not inherited, although affectedpeople can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial deletion of the long arm of chromosome 5


name: partial deletion of the long arm of chromosome 6

description: Chromosome 6q deletion is a chromosome abnormality that occurs when there is a missing copy of the genetic material located on the long arm (q) of chromosome 6. The severity of the condition and the signs and symptoms depend on the size and location of the deletion and which genes are involved. Features that often occur in people with chromosome 6q deletion include developmental delay, intellectual disability, and distinctive facial features. Most cases are not inherited, but people can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial deletion of the long arm of chromosome 7

description: Chromosome 7q deletion is a chromosome abnormality that occurs when there is a missing copy of the genetic material located on the long arm (q) of chromosome 7. The severity of the condition and the signs and symptoms depend on the size and location of the deletion and which genes are involved. Features that often occur in people with chromosome 7q deletion include developmental delay, intellectual disability, behavioral problems, and distinctive facial features. Most cases are not inherited, but people can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial deletion of the long arm of chromosome 8

description: Chromosome 8q deletion is a chromosome abnormality that occurs when there is a missing copy of the genetic material located on the long arm (q) of chromosome 8. The severity of the condition and the signs and symptoms depend on the size and location of the deletion and which genes are involved. Features that often occur in people with chromosome 8q deletion include developmental delay, intellectual disability, behavioral problems, and distinctive facial features. Most cases are not inherited, but people can pass the deletion on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial monosomy of the long arm of chromosome 9


name: partial monosomy of the long arm of chromosome 10


name: partial deletion of the long arm of chromosome 11

description: A cytogenetic abnormality that refers to the allelic loss of all or part of the long arm of chromosome 11.


name: partial deletion of the long arm of chromosome 13

description: A cytogenetic abnormality that refers to the allelic loss of all or part of the long arm of chromosome 13.


name: partial deletion of the long arm of chromosome 14

description: Chromosome 14q deletion is a chromosome abnormality that occurs when there is a missing (deleted) copy of genetic material on the long arm (q) of chromosome 14.


name: partial deletion of the long arm of chromosome 15


name: partial deletion of the long arm of chromosome 16


name: partial deletion of the long arm of chromosome 17


name: partial deletion of the long arm of chromosome 19


name: partial deletion of the long arm of chromosome 20


name: partial deletion of the long arm of chromosome 21


name: partial trisomy/tetrasomy of chromosome 5


name: partial trisomy/tetrasomy of chromosome 9


name: partial trisomy/tetrasomy of the short arm of chromosome 12


name: partial trisomy/tetrasomy of chromosome 18

description: A chromosomal disorder characterized by the presence of extra copy/copies of part of chromosome 18.


name: partial duplication of the short arm of chromosome 2

description: Chromosome 2p duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the short arm (p) of chromosome 2. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 2p duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Most cases are not inherited, but people can pass the duplication on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the short arm of chromosome 3

description: Chromosome 3p duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the short arm (p) of chromosome 3. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 3p duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Chromosome 3p duplication can be de novo or inherited from a parent with a balanced translocation. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the short arm of chromosome 4


name: partial trisomy/tetrasomy of the short arm of chromosome 5


name: partial duplication of the short arm of chromosome 6

description: Chromosome 6p duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the short arm (p) of chromosome 6. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 6p duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. This condition can occur sporadically or be inherited from a parent who is either mildy affected (has the deletion) or carries a balanced translocation. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the short arm of chromosome 7

description: Chromosome 7p duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the short arm (p) of chromosome 7. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 7p duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Most cases are not inherited, but people can pass the duplication on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the short arm of chromosome 8

description: Chromosome 8p duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the short arm (p) of chromosome 8. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 8p duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Most cases are not inherited, but people can pass the duplication on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the short arm of chromosome 10


name: partial duplication of the short arm of chromosome 11


name: partial duplication of the short arm of chromosome 16

description: Chromosome 16p duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the short arm (p) of chromosome 16. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 16p duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Most cases are not inherited, but people can pass the duplication on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the short arm of chromosome 17


name: partial trisomy/tetrasomy of the short arm of chromosome 18


name: partial duplication of the long arm of chromosome 1


name: partial duplication of the long arm of chromosome 2

description: Chromosome 2q duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the long arm (q) of chromosome 2. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 2q duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Most cases are not inherited, but people can pass the duplication on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the long arm of chromosome 3

description: Chromosome 3q duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on thelong arm (q) of chromosome 3. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 3q duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Chromosome 3q duplication can be de novo or inherited from a parent with a chromosomal rearrangement such as a balanced translocation. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the long arm of chromosome 4

description: Chromosome 4q duplication is a chromosome abnormality characterized by an extra copy (duplication) of genetic material on the long arm (q) of chromosome 4. The severity and specific symptoms depend on the size and location of the duplication, and which genes are involved. Features that have been described in some people with chromosome 4q duplication include developmental delay, intellectual disability, behavioral problems, birth defects, and distinctive facial features. Most cases are inherited from an unaffected parent with a chromosomal rearrangement called a balanced translocation. Some cases are not inherited and occur sporadically. Treatment is based on the signs and symptoms present in each person.


name: partial trisomy of the long arm of chromosome 5

description: Chromosome 5q duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the long arm (q) of chromosome 5. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 5q duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Chromosome 5q duplication can be de novo or inherited from a parent with a chromosomal rearrangement such as a balanced translocation. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the long arm of chromosome 6

description: Chromosome 6q duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the long arm (q) of chromosome 6. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 6q duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. In most cases, chromosome 6q duplication occurs de novo or is inherited from a parent with a chromosomal rearrangement such as a balanced translocation. Rarely, it is inherited from a parent with the same duplication. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the long arm of chromosome 7

description: Chromosome 7q duplication is a chromosome abnormality that occurs when there is an extra copy of genetic material on the long arm (q) of chromosome 7. The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 7q duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features. Most cases are not inherited, but people can pass the duplication on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the long arm of chromosome 8


name: partial trisomy of the long arm of chromosome 9


name: partial duplication of the long arm of chromosome 10


name: partial duplication of the long arm of chromosome 14


name: partial duplication of the long arm of chromosome 15

description: Chromosome 15q duplication is a chromosome abnormality that occurs when an extra (duplicate) copy of the genetic material located on the long arm (q) of chromosome 15 is present in each cell. The severity of the condition and the associated signs and symptoms vary based on the size and location of the duplication and which genes are involved. Common features shared by many people with this duplication include developmental delay; intellectual disability; hypotonia (low muscle tone); seizures ; high and/or cleft palate (roof of the mouth); scoliosis ; slow growth; communication difficulties; behavioral problems; and distinctive facial features. Most cases are not inherited, although affected people can pass the duplication on to their children. Treatment is based on the signs and symptoms present in each person.


name: partial trisomy of the long arm of chromosome 16


name: partial duplication of the long arm of chromosome 17


name: partial trisomy of the long arm of chromosome 18


name: partial duplication of the long arm of chromosome 19


name: partial trisomy of the long arm of chromosome 20


limb-girdle muscular dystrophy

description: Limb-girdle muscular dystrophy (LGMD) is a heterogeneous group of muscular dystrophies characterized by proximal weakness affecting the pelvic and shoulder girdles. Cardiac and respiratory impairment may be observed in certain forms of LGMD.


name: partial duplication of the long arm of chromosome 22


thymoma type B

description: An epithelial neoplasm arising from the thymus. It may be associated with myasthenia gravis, pure red cell aplasia, and hypogammaglobulinemia. It includes thymoma type B1 which is a thymoma of low grade malignant potential, thymoma type B2 which is a thymoma of moderate malignancy, and thymoma type B3 which is also known as well differentiated thymic carcinoma.


thymoma type AB

description: A thymic epithelial neoplasm characterized by the presence of a lymphocyte-poor component similar to that seen in type A thymoma and a lymphocyte-rich component which contains neoplastic small polygonal epithelial cells. It may be associated with myasthenia gravis and pure red cell aplasia. The majority of cases occur in the anterior mediastinum as Masaoka stage I tumors. A minority of the cases occur as stage II or stage III tumors. The overall survival is reported to be 80-100% at 5 and 10 years.


name: well-differentiated thymic neuroendocrine carcinoma


name: moderately-differentiated thymic neuroendocrine carcinoma


name: poorly differentiated thymic neuroendocrine carcinoma


MRCS syndrome

description: MRCS syndrome is a rare, genetic retinal dystrophy disorder characterized by bilateral microcornea, rod-cone dystrophy, cataracts and posterior staphyloma, in the absence of other systemic features. Night blindness is typically the presenting manifestation and nystagmus, strabismus, astigmatism and angle closure glaucoma may be associated findings. Progressive visual acuity deterioration, due to pulverulent-like cataracts, results in poor vision ranging from no light perception to 20/400.


name: infantile spams-psychomotor retardation-progressive brain atrophy-basal ganglia disease syndrome


angiosarcoma

description: A malignant tumor arising from the endothelial cells of the blood vessels. Microscopically, it is characterized by frequently open vascular anastomosing and branching channels. The malignant cells that line the vascular channels are spindle or epithelioid and often display hyperchromatic nuclei. Angiosarcomas most frequently occur in the skin and breast. Patients with long-standing lymphedema are at increased risk of developing angiosarcoma.


Bartter syndrome with hypocalcemia

description: Bartter syndrome with hypocalcemia is a type of Bartter syndrome characterized by hypocalcemia, hypomagnesemia and hypoparathyroidism along with features of Henle's loop dysfunction (polyuria, hypokalemic alkalosis, increased levels of plasma renin and aldosterone, low blood pressure and vascular resistance to angiotensin II). Bartter syndrome with hypocalcemia is a very rare manifestation of autosomal dominant hypocalcemia (ADH)


nevus of Ota

description: Nevus of Ota is an oculodermal melanocytosis more commonly found in Asian and African populations, usually present at birth and characterized by a usually unilateral, bluish gray, patchy, speckled pigmentation (that may progressively enlarge and darken) affecting the skin of the face along the distribution of the ophthalmic and maxillary divisions of the trigeminal nerve (periorbital region, temple, forehead, malar area, nose). In 2/3 cases the ipsilateral sclera is affected. Nevus of Ota usually remains stable once adulthood is reached but an increased risk of glaucoma and uveal melanoma may be observed. Extracutaneous lesions may also occur in cornea, retina, tympanum, nasal mucosa, pharynx, palate. Nevus of Ota occurs as solitary conditions but seldom may occur together with the nevus of Ito or nevus spilus.


nevus of Ito

description: Nevus of Ito is a benign dermal melanocytosis occurring most frequently in the Asian populations and characterized by unilateral, asymptomatic, blue, gray or brown skin pigmentation within the acromioclavicular and upper chest area (involving the side of the neck, the supraclavicular and scapular areas, and the shoulder region). It is usually diagnosed in early infancy and in early adolescence. Nevus of Ito may progressively enlarge and darken in color (particularly with puberty) and its appearance usually remains stable once adulthood is reached. Spontaneous regression does not occur. Malignant melanoma has rarely been reported within a nevus of Ito. It shares the clinical features of nevus of Ota, except its anatomic location and may in rare occasions occur together with the latter.


congenital smooth muscle hamartoma

description: Congenital smooth muscle hamartoma (CSMH) is a rare cutaneous hamartomatous lesion most often located on the lumbosacral area or proximal limbs (but rarely on atypical areas such as scalp, eyelid or foot) and characterized by a disorganized proliferation of smooth muscle fibers of arrector pili presenting usually as a localized skin-colored or hyperpigmented plaque (up to 10 cm in diameter) with prominent vellus hairs (most common classic form) or less commonly by multiple skin-colored papules that can coalesce to form irregularly shaped plaques. With time, hyperpigmentation and vellus hairs usually diminish and neither malignant transformation nor associated systemic involvement has been reported.


neuroacanthocytosis

description: Neuroacanthocytosis (NA) syndromes are a group of genetic diseases characterized by the association of red blood cell acanthocytosis (deformed erythrocytes with spike-like protrusions) and progressive degeneration of the basal ganglia.


hyperinsulinism due to HNF4A deficiency

description: Hyperinsulinism due to HNF4A deficiency is a form of diazoxide-sensitive diffuse hyperinsulinism (DHI), characterized by macrosomia, transient or persistent hyperinsulinemic hypoglycemia (HH), responsiveness to diazoxide and a propensity to develop maturity-onset diabetes of the young subtype 1 (MODY-1).


Fuchs heterochromic iridocyclitis

description: Fuchs heterochromic iridocyclitis (FHI) is an ocular disease of unknown etiology occurring in a very small percentage (0.5-6.2%) of uvietis cases, characterized by diffuse iris heterochromia or atrophy, keratic precipitates in the absence of synechiae, and in some cases evolving to glaucoma and vitreous opacities.


acquired prothrombin deficiency

description: An instance of prothrombin deficiency that is acquired during the lifetime of the individual.


name: acute necrotizing encephalopathy of childhood

description: Acute necrotizing encephalopathy of childhood is a rare neurologic disease characterized by a rapid onset of seizures, an altered state of consciousness, neurologic decline, and variable degrees of hepatic dysfunction following a respiratory or gastrointesitnal infection (e.g. mycoplasma, influenza virus) in a previously healthy child. Brain MRI of patients reveals bilateral, multiple, symmetrical lesions predominantly observed in thalami and brainstem, but also in periventricular white matter and cerebellum in some cases.


name: generalized peeling skin syndrome type C


name: microcephalic osteodysplastic primordial dwarfism types I and III

description: Microcephalic osteodysplastic primordial dwarfism (MOPD) types 1 and 3 are characterized by intrauterine and postnatal growth retardation, microcephaly, facial dysmorphism, skeletal dysplasia, low-birth weight and brain anomalies. Although MOPD types 1 and 3 were originally described as two separate entities on the basis of radiological criteria (notably small differences in pelvic and long bone structure), later reports confirmed that the two forms represent different modes of expression of the same syndrome.


familial multiple meningioma

description: Familial multiple meningioma is a rare, benign neoplasm of the central nervous system characterized by the development of multiple or, rarely, solitary meningiomas in two or more blood relatives, without other apparent syndromic manifestations. Depending on the localization, growth rate and size of the tumors, patients can present with subtle, gradually worsening or abrupt and severe neurological compromise or can be completely asymptomatic.


NK-cell enteropathy

description: Natural killer (NK)-cell enteropathy is a benign NK-cell lymphoproliferative disease characterized by minor abdominal symptoms (abdominal pain, diverticulosis, constipation and reflux) due to NK cell-derived lesions in the mucosal layer of the gastrointestinal tract and often mistaken for NK or T-cell lymphoma.


name: partial monosomy of the short arm of chromosome X


name: partial deletion of the long arm of chromosome X


name: partial duplication of the short arm of chromosome X


name: partial duplication of the long arm of chromosome X

description: Chromosome Xq duplication is a chromosome abnormality that affects many different parts of the body. People with this condition have an extra copy of the genetic material located on the long arm (q) of the X chromosome in each cell. The severity of the condition and the associated signs and symptoms vary based on the size and location of theduplication;the genes involved; and the sex of the affected person. In general, males are typically more severely affected than females and often experience intellectual disability, developmental delay, short stature, abnormalities of the reproductive organs, anddistinctive craniofacial features. Many females with this duplication do not have any symptoms or are only affected with short stature; however, some may be just as severely affected as males with the condition. Most cases are inherited in an X-linked manner, often from a mother with no signs or symptoms of the condition. Treatment is based on the signs and symptoms present in each person.


name: partial duplication of the short arm of chromosome 1


trisomy 8p

description: Trisomy 8p is a rare chromosomal anomaly syndrome, resulting from the partial duplication of the short arm of chromosome 8, with highly variable phenotype ranging from no dysmorphic features and only mild intellectual disability to patients with severe developmental delay, neonatal hypotonia, short stature, profound intellectual disability, mild dysmorphic features (e.g. mild ptosis, hypertelorism, down-slanting palpebral fissures, broad nasal bridge, short, prominent philtrum, abnormal dentition) and structural brain abnormalities. Autism, epilepsy, and spastic paraplegia have also been reported.


name: interstitial lung disease specific to childhood

description: A interstitial lung disease that occurs during childhood.


name: primary interstitial lung disease specific to childhood


isolated pulmonary capillaritis

description: Isolated pauciimmune pulmonary capillaritis is a small vessel vasculitis restricted to the lungs that may induce diffuse alveolar hemorrhage with dyspnea, anemia, chest pain, hemoptysis, bilateral and diffuse alveolar infiltrates at chest X-rays, without any underlying systemic disease. ANCA are frequently positive but could be negative.


name: interstitial lung disease specific to infancy


name: Langerhans cell histiocytosis specific to childhood

description: Langerhans cell histiocytosis that occurs during childhood.


name: interstitial lung disease specific to adulthood


name: Langerhans cell histiocytosis specific to adulthood

description: Langerhans cell histiocytosis that occurs during adulthood.


name: drug or radiation exposure-related interstitial lung disease


name: osteochondrodysplatic nanism-deafness-retinitis pigmentosa syndrome

description: Osteochondrodysplatic nanism-deafness-retinitis pigmentosa syndrome is characterized by severe dwarfism, progressive scoliosis and bilateral dislocation of the hip, associated with sensorineural deafness and retinitis pigmentosa. Radiographs show diffuse osteoporosis, severe bone-age delay and dysplasia of the femoral head. It has been described in two patients. Transmission is autosomal dominant variable penetrance.


thanatophoric dysplasia

description: Thanatophoric dysplasia (TD) is a severe and generally lethal skeletal dysplasia presenting in the prenatal period and characterized by micromelia, macrocephaly, narrow thorax, and distinctive facial features. It includes TD, type 1 (TD1) and TD, type 2 (TD2), that can be differentiated from each other by femur and skull shape.


congenital mesoblastic nephroma

description: A low grade childhood congenital malignant neoplasm arising from the kidney. It is characterized by the presence of fibroblastic cells. The majority of cases occur in the first year of life. Complete excision is usually associated with an excellent prognosis.


name: adult familial nephronophthisis-spastic quadriparesia syndrome

description: This syndrome, associating familial adult medullary cystic disease with spastic quadriparesis has been described in two cases so far. Renal transplantation was successful in those two patients.


neuroectodermal-endocrine syndrome

description: Neuroectodermal-endocrine syndrome is characterized by a combination of endocrine and neuroectodermal abnormalities, including low growth hormone levels, delayed puberty, type II diabetes mellitus, mild intellectual deficit, sensorineural deafness, characteristic facial appearance and alopecia. It has been described in four sibs from Myanmar.


neuroepithelioma

description: Peripheral neuroepithelioma is a rare noncentral nervous system tumor with evidence of primitive neuroectodermal differentiation.


pseudomyxoma peritonei

description: Pseudomyxoma peritonei is characterized by disseminated intra-peritoneal mucinous tumors and mucinous ascites in the abdomen and pelvis.


intraocular medulloepithelioma

description: Intraocular medulloepithelioma is a rare eye tumor characterized by a white, gray or yellow-colored cystic mass that arises from the primitive neuroectodermal, nonpigmented epithelium of the ciliary body, or occasionally from the optic nerve, optic disk, retina or iris. Typically it has a benign clinical course with good prognosis and generally presents with childhood onset of poor vision and pain, glaucoma, and/or cataract. Leukocoria, exotropia, exophthalmos, strabismus, epiphora, change in eye color, hyphema, and raised intraocular pressure are also remarkable manifestations.


classic maple syrup urine disease

description: Classic maple syrup urine disease (classic MSUD) is the most severe and probably common form of MSUD characterized by a maple syrup odor in the cerumen at birth, poor feeding, lethargy and focal dystonia, followed by progressive encephalopathy and central respiratory failure if untreated.


intermediate maple syrup urine disease

description: Intermediate maple syrup urine disease (intermediate MSUD) is a milder form of MSUD characterized by persistently raised branched-chain amino acids (BCAAs) and ketoacids, but fewer or no acute episodes of decompensation.


intermittent maple syrup urine disease

description: Intermittent maple syrup urine disease (intermittent MSUD) is a mild form of MSUD where patients (when well) are asymptomatic with normal levels of branched-chain amino acids (BCAAs) but with catabolic stress are at risk of acute decompensation with ketoacidosis, which can lead to cerebral edema and coma if untreated.


name: thiamine-responsive maple syrup urine disease

description: Thiamine-responsive maple syrup urine disease (thiamine-responsive MSUD) is a less severe variant of MSUD that manifests with a phenotype similar to intermediate MSUD but that responds positively to treatment with thiamine.


mycophenolate mofetil embryopathy

description: Mycophenolate mofetil (MMF) embryopathy is a malformative syndrome due to the teratogenic effect of MMF, an effective immunosuppressive agent widely used for the prevention of organ rejection after organ transplantation.


name: DYRK1A-related intellectual disability syndrome due to 21q22.13q22.2 microdeletion


name: autosomal recessive intermediate Charcot-Marie-Tooth disease

description: Autosomal recessive form of intermediate Charcot-Marie-Tooth disease.


spina bifida cystica

description: A congenital abnormality in which the spinal cord and meninges protrude through a defect in the spinal column. The protrusion is above the skin surface.


posterior meningocele

description: Posterior meningocele is a rare neural tube closure defect characterized by the herniation of a cerebrospinal fluid-filled sac, that is lined by dura and arachnoid mater, through a posterior spina bifida and covered by a layer of skin of variable thickness, which may be dysplastic or ulcerated. The spinal cord and nerves are generally not included and function normally, although sometimes a tethered cord may be associated. They are most commonly located in the lumbar or sacral region.


myelocystocele

description: Myelocystocele is characterized by a large, ependyma-lined, cystic dilation of the caudal end of the central canal of the spinal cord; it projects dorsally through a lamina defect, with overlying varying amounts of lipomatous subcutaneous tissue. Myelocystoceles are associated with a tethered cord and meningocele, which communicates with the spinal subarachnoid space, but not with the central canal cyst.


cephalocele

description: A congenital neural tube closure defect resulting in the protrusion of the brain through a skull opening. When the protrusion includes the meninges, the term encephalomeningocele is used.


meningoencephalocele

description: A congenital abnormality in which the meninges protrude through a defect in the cranium.


occipital encephalocele

description: A type of encephalocele (that is, a a protrusion of part of the cranial contents including brain tissue through a congenital opening in the cranium, typically covered with skin or mucous membrane) in the occipital region of the skull. Occipital encephalocele presents as a midline swelling over the occipital bone. It is usually covered with normal full-thickness scalp.


parietal encephalocele

description: An encephalocele located between bregma and lambda.


basal encephalocele

description: Basal encephalocele is an encephalocele that occurs along the cribriform plate or through the sphenoid bone. The mass may appear in the nasal cavity, nasopharynx, epipharynx, sphenoid sinus, posterior orbit, or pterygopalatine fossa. The important distinction from other types is that no external tumor is visible except in those rare instances of herniations so large that they protrude through the mouth or nares.


leptomyelolipoma

description: Leptomyelolipoma is a rare neural tube closure defect characterized by an abnormally low lying conus which is tethered by a lumbosacral lipomatous mass (containing fatty tissue, nerve fibers, meningeal strands and fibrous bands) which engulfs the filum terminale and varying numbers of dorsal and ventral nerve root components, typically producing sensory, motor, bowel and/or bladder dysfunction. Cutaneous stigmata, absent or reduced reflexes and foot defomities (e.g. talipes cavovalgus) are frequently present.


primary tethered cord syndrome

description: Primary tethered cord syndrome is a genetic, non-syndromic congenital malformation of the neurenteric canal, spinal cord and column characterized by progressive neurologic deterioration (pain, sensorimotor deficits, abnormal gait, decreased tone or abnormal reflexes), musculoskeletal changes (foot deformities and asymmetry, muscle atrophy, limb weakness and numbness, gait disturbances, scoliosis) and/or genitourinary manifestations (bladder and bowel dysfunction). Midline cutaneous stigmata in the lumbosacral region, such as turfs of hair, skin appendages, dimples, subcutaneous lipomas, skin discoloration or hemangiomas, are frequently associated.


isolated megalencephaly

description: A megalencephaly (disease) that is not part of a larger syndrome.


bilateral polymicrogyria

description: Bilateral polymicrogyria is a rare cerebral malformation due to abnormal neuronal migration defined as a cerebral cortex with many excessively small convolutions. It presents with developmental delay, intellectual disability, seizures and various neurological impairments and may be isolated or comprise a clinical feature of many genetic syndromes. It may also be associated with perinatal cytomegalovirus infection.


unilateral polymicrogyria

description: Unilateral polymicrogyria is a cerebral cortical malformation characterized by unilateral excessive cortical folding and abnormal cortical layering. It comprises two sub-types depending on the areas affected: unilateral hemispheric and focal polymicrogyria.


unilateral focal polymicrogyria

description: Unilateral focal polymicrogyria (BFPP) is the mildest sub-type of polymicrogyria (PMG), a cerebral cortical malformation characterized by excessive cortical folding and abnormal cortical layering, that affects only one small region of the brain and that may show no neurologic involvement.


cerebral cortical dysplasia

description: Abnormalities in the development of the cerebral cortex. These include malformations arising from abnormal neuronal and glial cell proliferation or apoptosis (Group I); abnormal neuronal migration (Group ii); and abnormal establishment of cortical organization (Group iii). Many inborn metabolic brain disorders affecting cns formation are often associated with cortical malformations. They are common causes of epilepsy and developmental delay.


name: isolated focal cortical dysplasia type I


name: isolated focal cortical dysplasia type Ia


name: isolated focal cortical dysplasia type Ib


name: isolated focal cortical dysplasia type Ic


description: Neutropenia-monocytopenia-deafness syndrome is characterized by neutropenia with myeloid marrow hypoplasia, monocytopenia, and congenital deafness. It has been described in three siblings who suffered recurrent bacterial infections.


name: isolated focal cortical dysplasia type IIa


name: isolated focal cortical dysplasia type IIb


glioependymal/ependymal cyst

description: Glioependymal/ependymal cyst is a rare central nervous system malformation defined as a subarachnoid, supratentorial, interventricular or intraspinal, sometimes intracerebral or intramedullar cyst with an internal ependymal lining, possibly surrounded by glial tissue. It may be an incidental finding or may present at different ages with clinical features depending on its size and location. It may distort adjacent brain structures and cause macrocephaly, ventriculomegaly, hydrocephalus, focal neurological signs and other signs and symptoms. In some cases, it is associated with other cerebral malformations (e.g. corpus callosum agenesis, polymicrogyria, heterotopias).


name: isolated total cerebellar vermis agenesis


name: isolated partial cerebellar vermis agenesis


name: isolated Dandy-Walker malformation with hydrocephalus


name: isolated Dandy-Walker malformation without hydrocephalus


name: isolated unilateral hemispheric cerebellar hypoplasia

description: Isolated unilateral hemispheric cerebellar hypoplasia is a rare, non-syndromic cerebellar malformation characterized by loss of volume in the right or left cerebellar hemisphere, with intact vermis and no other neurological anomalies (i.e. normal cerebral hemispheres, fourth ventricle, pons, medulla and midbrain). Patients may be asymptomatic or may present developmental and speech delay, hypotonia, abnormal ocular movements, persistent headaches and/or peripheral vertigo and ataxia. Neurological examination is otherwise normal.


name: isolated bilateral hemispheric cerebellar hypoplasia

description: Isolated bilateral hemispheric cerebellar hypoplasia is a rare cerebellar malformation characterized by hypoplasia of both cerebellar hemispheres with no other cerebellar/cerebral anomaly or other associated clinical feature. Affected patients present with mild hypotonia with motor delay, mild cognitive impairment, language delay, visuospatial and verbal memory deficits, dysdiadochokinesis, intentional tremor, and possible presence of emotional fragility and mild depression.


description: Arthrogryposis-Renal dysfunction-Cholestasis (ARC) syndrome is a multisystem disorder, characterized by neurogenic arthrogryposis multiplex congenita, renal tubular dysfunction and neonatal cholestasis with low serum gamma-glutamyl transferase activity.


noma

description: Noma is a gangrenous disease that causes severe destruction of the soft and osseous tissues of the face.


description: Odonto-onycho dysplasia-alopecia syndrome is a rare, genetic ectodermal dysplasia syndrome characterized by almost total alopecia with only sparse, thin, brittle, slow-growing scalp hair, fair and sparse eyebrows and eyelashes, absent axillary and pubic hair, fragile and brittle fingernails, thick and brittle toenails (both with a subungual corneal layer), hypodontia, microdontia, widely spaced teeth with hypoplastic enamel, mild palmoplantar keratosis, cafe-au-lait spots and areolae anomalies. There have been no further descriptions in the literature since 1985.


description: Olivopontocerebellar atrophy-deafness syndrome is characterized by infancy-onset olivopontocerebellar atrophy, sensorineural deafness and speech impairment. It has been described in less than 15 children. Most cases were sporadic, but autosomal recessive inheritance was suggested in three cases.


omodysplasia

description: Omodysplasia is a rare skeletal dysplasia characterized by severe limb shortening and facial dysmorphism. Two types of omodysplasia have been described: an autosomal recessive or generalized form (also referred to as micromelic dysplasia with dislocation of radius) marked by severe micromelic dwarfism with predominantly rhizomelic shortening of both the upper and lower limbs, and an autosomal dominant form in which stature is normal and shortening is limited to the upper limbs.


onchocerciasis

description: Onchocerciasis is a form of filariasis, caused by the parasitic worm Onchocerca volvulus, transmitted by the black fly. The infection can either be asymptomatic or manifest as an ocular disease (river blindness) with itchy eyes, erythema, photophobia, onchodermatitis or onchocercal skin disease (classified into acute papular, chronic papular, lichenified, atrophic, and depigmentated) and onchocercomas (over bony prominences). Other classic clinical manifestations are ichthyosis-like lesions (''lizard skin'') and ''hanging groin'', which may be associated with lymphadenopathy.


Opitz G/BBB syndrome

description: Opitz G/BBB syndrome (OS) is a multiple congenital anomalies disorder characterized by malformations of the midline including hypertelorism, laryngo-tracheo-esophalgeal defects and hypospadias. There are two clinically indistinguishable genetic subtypes of Opitz G/BBB: X-linked Opitz G/BBB syndrome (XLOS), and autosomal dominant Opitz G/BBB syndrome (ADOS).


oromandibular-limb hypogenesis syndrome

description: Oromandibular-limb hypogenesis syndromes (OLHS) are a group of dysmorphic complexes (including Charlie M syndrome, Hanhart syndrome and glossopalatine ankylosis) characterized by the association of severe asymmetric limb defects (primarily involving distal segments) and abnormalities of the oral cavity and mandible (hypoglossia, aglossia, micrognathia, glossopalatine ankylosis, cleft palate, and gingival anomalies).


L1 syndrome

description: L1 syndrome is a mild to severe congenital X-linked developmental disorder characterized by hydrocephalus of varying degrees of severity, intellectual deficit, spasticity of the legs, and adducted thumbs. The syndrome represents a spectrum of disorders including: X-linked hydrocephalus with stenosis of the aqueduct of Sylvius (HSAS), MASA syndrome, X-linked complicated hereditary spastic paraplegia type 1, and X-linked complicated corpus callosum agenesis.


name: idiopathic pulmonary arterial hypertension

description: Idiopathic pulmonary arterial hypertension (IPAH) is a sporadic form of pulmonary arterial hypertension (PAH) characterized by elevated pulmonary arterial resistance leading to right heart failure. IPAH is progressive and potentially fatal and not associated with an underlying condition or family history of PAH.


name: heritable pulmonary arterial hypertension

description: Heritable pulmonary arterial hypertension (HPAH) is a form of pulmonary arterial hypertension (PAH), occurring due to mutations in PAH predisposing genes or in a familial context. HPAH is characterized by elevated pulmonary arterial resistance leading to right heart failure. HPAH is progressive and potentially fatal.


name: drug- or toxin-induced pulmonary arterial hypertension

description: Drug- or toxin-induced pulmonary arterial hypertension (PAH) is a form of pulmonary arterial hypertension (PAH) secondary to the exposition to drugs. Drug- or toxin-induced PAH is characterized by elevated pulmonary arterial resistance leading to right heart failure. Drug or toxin induced PAH is progressive and potentially fatal.


name: pulmonary hypertension owing to lung disease and/or hypoxia


name: behavioral variant of frontotemporal dementia

description: Behavioral variant of frontotemporal dementia (bv-FTD) is a form of frontotemporal dementia (FTD), characterized by progressive behavioral impairment and a decline in executive function with frontal lobe-predominant atrophy.


name: frontotemporal dementia with motor neuron disease

description: Frontotemporal dementia with motor neuron disease (FTD-MND) is a type of frontotemporal lobar degeneration characterized by the insidious onset (between the ages of 38-78 years) of dementia-associated psychiatric symptoms (e.g. personality changes, uninhibited behavior, irritability, aggressiveness), memory difficulties, global intellectual impairment, emotional disorders and transcortical motor aphasia that eventually leads to mutism, in addition to the manifestations of motor neuron disease such as neurogenic muscular wasting (similar to what is seen in amyotrophic lateral sclerosis). The disease is progressive, with death occurring 2-5 years after onset.


name: imperforate oropharynx-costo vetebral anomalies syndrome

description: Imperforate oropharynx-costovertebral anomalies syndrome is a dysostosis with predominant vertebral and costal involvement characterized by oropharyngeal atresia, mild mandibulofacial dysostosis, auricular malformations, and costovertebral anomalies (hemivertebrae, block vertebra, partial fusion of the ribs, absent ribs). There have been no further descriptions in the literature since 1989.


name: hemolytic disease of the newborn with Kell alloimmunization


name: bile acid CoA ligase deficiency and defective amidation

description: Bile acid CoA ligase deficiency and defective amidation is an anomaly of bile acid synthesis characterized by fat malabsorption, neonatal cholestasis and growth failure.


name: malignant epithelial tumor of salivary glands


name: benign epithelial tumor of salivary glands


multiple endocrine neoplasia

description: Multiple endocrine neoplasia (MEN) is a group of rare inherited cancer syndromes characterized by the development of two or more endocrine gland tumors, sometimes with tumor development in other tissues or organs.


idiopathic recurrent stupor

description: Idiopathic recurrent stupor is a rare neurologic disease characterized by unpredictable, transient and spontaneous unresponsiveness lasting from hours to days, with a frequency of three to seven attacks per year, in the absence of readily discernible toxic, metabolic or structural causes.


name: mucopolysaccharidosis type 6, rapidly progressing


name: mucopolysaccharidosis type 6, slowly progressing


Machado-Joseph disease type 1

description: Machado-Joseph disease type 1 is a rare, usually severe subtype of Machado-Joseph disease (SCA3/MJD) characterized by the presence of marked pyramidal and extrapyramidal signs.


Machado-Joseph disease type 2

description: Machado-Joseph disease type 2 is a subtype of Machado-Joseph disease (SCA3/MJD) with intermediate severity characterized by an intermediate age of onset, cerebellar ataxia and external progressive ophthalmoplegia, with variable pyramidal and extrapyramidal signs.


Machado-Joseph disease type 3

description: Machado-Joseph disease type 3 is a subtype of Machado-Joseph disease (SCA3/MJD) of milder severity characterized by late onset, slower progression, and peripheral amyotrophy.


description: A rare, genetic overgrowth syndrome characterized by non- progressive, asymmetrical, moderate hemihyperplasia (frequently affecting the limbs) associated with slow growing, painless, multiple, recurrent, subcutaneous lipomatous masses distributed throughout entire body (in particular back, torso, extremities, fingers, axillae). Superficial vascular malformations may also be associated. Increased risk of intra-abdominal embryonal malignancies may be associated.


osteochondritis dissecans

description: A rare bone disease characterized by an acquired idiopathic necrotic lesion of subchondral bone with the formation of a sequestrum, which may detach to form loose bodies in joints. OCD mainly affects the knee, ankle and elbow joints and can lead to pain, functional limitations and secondary osteoarthritis.


name: limbic encephalitis with caspr2 antibodies

description: Limbic encephalitis with caspr2 antibodies is a rare neuroimmunological disorder characterized by the onset of cognitive deficits, psychiatric disturbances (e.g. personality changes), seizures, peripheral nerve hyperexcitability, dysautonomia, neuropathic pain, insomnia and weight loss, in association with detection of caspr2 antibodies in serum or cerebrospinal fluid, with or without underlying malignancies. Other features reported include blepharoclonus, myoclonic status epilepticus, and dyskinesia.


hypnic headache

description: Conditions in which the primary symptom is headache and the headache cannot be attributed to any known causes.


familial hyperinsulinism

description: An instance of hyperinsulinism (disease) that is caused by an inherited modification of the individual's genome.


hyperinsulinism due to UCP2 deficiency

description: HyHyperinsulism due to UCP2 deficiency (HIUCP2) is a form of diazoxide-sensitive diffuse hyperinsulinism (DHI) characterized by hypoglycemic episodes from the neonatal period, a good clinical response to diazoxide and a probable transient nature of the disease with spontaneous resolution.


name: autosomal dominant hyperinsulinism due to SUR1 deficiency

description: Autosomal dominant hyperinsulinism due to SUR1 deficiency is a form of diazoxide-sensitive diffuse hyperinsulinism (DHI), characterized by hypoglycemic epiosodes that are usually mild, escaping detection during infancy and usually a good clinical response to diazoxide. Autosomal dominant hyperinsulinism due to SUR1 deficiency usually has a milder phenotype when compared to that resulting from recessive K-ATP mutations (recessive forms of Diazoxide-resistant hyperinsulinism).


name: autosomal dominant hyperinsulinism due to Kir6.2 deficiency

description: Autosomal dominant hyperinsulinism due to Kir6.2 deficiency is a form of diazoxide-sensitive diffuse hyperinsulinism (DHI) characterized by hypoglycemic epiosodes that are usually mild, escaping detection during infancy, and usually a good clinical response to diazoxide, (but some are diazoxide resistant). Autosomal dominant hyperinsulinism due to Kir6.2 deficiency usually has a milder phenotype when compared to that resulting from recessive K+ (K-ATP) channel mutations (Recessive forms of diazoxide-resistant hyperinsulinism).


diazoxide-resistant hyperinsulinism

description: Diazoxide-resistant hyperinsulism (DRH) is form of congenital isolated hyperinsulism caused by an abnormal insulin production by B-cells in the pancreas that can be diffuse or focal and is characterized by an excessive/ uncontrolled insulin secretion (inappropriate for the level of glycemia), recurrent episodes of profound hypoglycemia and resistance to medical management with diazoxide.


name: diazoxide-resistant focal hyperinsulinism due to SUR1 deficiency


name: diazoxide-resistant focal hyperinsulinism due to Kir6.2 deficiency


name: adult-onset non-insulinoma persistent hyperinsulinemic hypoglycemia

description: Diazoxide-resistant hyperinsulism (DRH) is form of congenital isolated hyperinsulinism caused by an abnormal insulin production by b-cells in the pancreas that can be diffuse or focal and is characterized by an excessive/ uncontrolled insulin secretion (inappropriate for the level of glycemia), recurrent episodes of profound hypoglycemia and resistance to medical management with diazoxide


description: Sporadic pheochromocytoma/secreting paraganglioma are isolated, non-familial, catecholamin-producing tumors arising from neuroendocrine chromaffin cells in the adrenal medulla or in extra-adrenal chromaffin tissue, respectively. The majority of these tumors are benign and the presenting symptoms are typically caused by the increased catecholamine production of the tumor, including hypertension (often paroxysmal), tachycardia, anxiety and/or excessive sweating.


name: symptomatic form of Coffin-Lowry syndrome in female carriers


Blount disease

description: Blount disease is characterized by disturbed growth of the inner portion of the upper tibial extremity, progressively leading to bowlegged deformity with bone angulation just below the knee (tibia varus). In 60% of cases, the condition affects both legs.


Bruck syndrome

description: Bruck syndrome is characterized by the association of osteogenesis imperfecta and congenital joint contractures.


name: osteogenesis imperfecta-retinopathy-seizures-intellectual disability syndrome

description: Osteogenesis imperfecta-retinopathy-seizures-intellectual disability syndrome is characterized by osteogenesis imperfecta, wormian bones, optic atrophy, retinopathy, seizures and severe developmental delay. It has been described in two sibs born to consanguineous parents.


name: osteopathia striata-pigmentary dermopathy-white forelock syndrome

description: Osteopathia striata-pigmentary dermopathy-white forelock syndrome is characterized by the association of osteopathia striata (longitudinal striations through most of the long bones) with a macular, hyperpigmented dermopathy and a white forelock.


osteopetrosis

description: Osteopetrosis, also known as marble bone disease, is a descriptive term that refers to a group of rare, heritable disorders of the skeleton characterized by increased bone density on radiographs.


description: Osteoporosis-macrocephaly-blindness-joint hyperlaxity syndrome is characterized by osteoporosis, macrocephalus, brachytelephalangy, and hyperextensibility of the joints. Congenital amaurosis and intellectual deficit have also been reported. This syndrome has been described in three members of one family.


name: polycystic ovaries-urethral sphincter dysfunction syndrome

description: Polycystic ovaries-urethral sphincter dysfunction syndrome is characterized by urinary retention and incomplete emptying of the bladder associated with abnormal electromyographic activity. It has been described in 33 women, 14 of whom also had polycystic ovaries.


Spasmus nutans

description: Spasmus nutans (SN) is a rare eye disease characterized by the clinical triad of asymmetric and pendular nystagmus, head nodding, and torticollis.


acute endophthalmitis

description: Acute form of endophthalmitis.


chronic endophthalmitis

description: Chronic form of endophthalmitis.


name: toxic maculopathy due to antimalarial drugs

description: Toxic maculopathy due to antimalarial drugs is a rare, acquired eye disease, due to long-term exposure to chloroquinine (CQ) or hydrochloroquinine (HCQ), characterized by a slowly progressive, usually non-reversible, development of bilateral atrophic bull's-eye maculopathy (progressive loss of central vision acuity, reduced color vision and central scotoma), which in severe cases can spread over the entire fundus, leading to widespread retinal atrophy and visual loss.


primary oculocerebral lymphoma

description: Primary oculocerebral lymphoma is a rare, primary, organ-specific, extranodal non-Hodgkin's lymphoma (typically diffuse large B-cell lymphoma), simultaneously affecting the intraocular compartments (retina, vitreous, optic nerve, uvea and others) and the central nervous system (commonly the cerebellum, spinal cord or pia mater). The presenting symptoms vary depending on the localization of the tumor and may include vitreous floaters or blurred vision, raised intracranial pressure (headache, vomiting, papilledema) and/or focal neurological deficits.


primary organ-specific lymphoma

description: A header term comprising lymphomas classified based on anatomic location.


infectious anterior uveitis

description: An infectious disease involving a pathogenic inflammatory response in the anterior uvea.


postorgasmic illness syndrome

description: A rare condition in which a man develops flu-like symptoms after ejaculation (when semen is released from the penis). Specific symptoms can include extreme fatigue, weakness, feverishness or sweating, mood changes or irritability, memory or concentration problems, and/or a stuffy nose or itching eyes. Symptoms may occur within seconds, minutes, or a few hours after ejaculation. Most symptoms last for 2 to 7 days and go away on their own. The underlying cause of POIS is poorly understood. Some scientists believe it may be due to a semen allergy that causes an immediate hypersensitivity reaction. There is no standard treatment for POIS, but some men have been treated with SSRIs, antihistamines, and/or benzodiazepines. Hyposensitization therapy (decreasing the immune response by exposure to semen) reportedly improved symptoms in two men with POIS.


name: vitamin B12-responsive methylmalonic acidemia

description: Vitamin B12-responsive methylmalonic acidemia (MA) is an inborn error of vitamin B12 (cobalamin) metabolism characterized by recurrent ketoacidotic comas or transient vomiting, dehydration, hypotonia and intellectual deficit, which responds to vitamin B12. There are three types: cblA, cblB and cblD-variant 2 (cblDv2).


calciphylaxis

description: Calciphylaxis is a disease in which blood vessels (veins and arteries) become blocked by a build-up of calcium in the walls of the vessels, preventing blood from flowing to the skin or internal organs. The lack of blood flow (ischemia) damages healthy tissue and causes itto die (necrosis). The most obvious and frequent symptom of calciphylaxis is damage to the skin, as ulcers can developand become infected easily. Calciphylaxis can also affect fat tissue, internal organs, and skeletal muscle, causing infections, pain, and organ failure.These symptoms are often irreversible, and many individuals with calciphylaxis may not survive more thana few months after they are diagnosed due to infection that spreads throughout the body (sepsis), or organ failure. The exact cause of calciphylaxis is unknown. Treatments may include medications to reduce pain, antibiotics to treat infections, and various approaches to preventing the development or worsening of this condition.


calciphylaxis cutis

description: Calciphylaxis cutis is a life-threatening syndrome characterized by progressive and painful skin ulcerations associated with media calcification of medium-size and small cutaneous arterial vessels. It affects mainly patients on dialysis or after renal transplantation.


visceral calciphylaxis

description: Visceral calciphylaxis is a rare, life-threatening, non-inflammatory vasculopathy disorder characterized by diffuse precipitation of calcium in viscera (mainly in the heart or lungs, but also in the stomach or kidneys) leading to fibrosis and thrombosis, which eventually cause necrotic ulcerations of the tissue. Patients may present with dyspnea, cough and respiratory failure or acute heart block and subsequent sudden cardiac death, depending on the affected organ. The disease mainly affects patients on dialysis or patients having undergone renal transplantation.


microform holoprosencephaly

description: Microform holoprosencephaly is a benign form of holoprosencephaly (HPE) characterized by midline defects without the typical HPE defect in brain cleavage.


laryngotracheoesophageal cleft type 0

description: Laryngo-tracheo-esophageal cleft (LC) type 0 is a congenital respiratory tract anomaly characterized by a submucosal laryngo-tracheo-esophageal cleft with minor symptoms or an asymptomatic course.


name: Pelizaeus-Merzbacher disease, connatal form

description: The connatal form of Pelizaeus-Merzbacher disease (PMD) is the most severe form of PMD.


name: Pelizaeus-Merzbacher disease, classic form

description: The classic form of Pelizaeus-Merzbacher disease (PMD) is the infantile form of PMD.


name: Pelizaeus-Merzbacher disease, transitional form

description: The transitional form of Pelizaeus-Merzbacher disease (PMD) is the intermediate form of PMD.


name: Pelizaeus-Merzbacher disease in female carriers

description: Pelizaeus-Merzbacher disease (PMD) in female carriers is the presentation of PMD in some women carrying mutations in the PLP1 gene (Xq22).


null syndrome

description: The null syndrome is part of the Pelizaeus-Merzbacher disease (PMD) spectrum and is characterized by mild PMD features associated with demyelinating peripheral neuropathy.


Pelizaeus-Merzbacher-like disease

description: Pelizaeus-Merzbacher like disease (PMLD) is an autosomal recessive leukodystrophy sharing identical clinical and radiological features as X-linked Pelizaeus-Merzbacher disease (PMD).


autoimmune pancreatitis type 1

description: Type 1 autoimmune pancreatitis is a form of autoimmune pancreatitis seen in elderly males (>60 years) and presenting with abdominal pain, steatorrhea, obstructive jaundice and other organ (bile duct, kidneys and retroperitoneum) involvement. It is thought to be due to an immunoglobulin G4 (IgG4)-associated systemic disease.


autoimmune pancreatitis type 2

description: Type 2 autoimmune pancreatitis is a form of autoimmune pancreatitis (see this term) affecting both sexes and having a younger age of onset (<60 years) and presenting with abdominal pain, steatorrhea and obstructive jaundice.


distal monosomy 12p

description: Distal monosomy 12p is a rare partial autosomal monosomy characterized by language development delay with childhood apraxia of speech, mild intellectual disability, behavourial abnormalities (autistic spectrum disorder, attention deficit hyperactivity disorder, anxiety) and mildly dysmorphic nonspecific features. Additional clinical features may include muscular hypotonia and joint laxity, hernias and microcephaly.


name: autosomal semi-dominant severe lipodystrophic laminopathy


name: erythropoietic uroporphyria associated with myeloid malignancy


name: recessive intellectual disability-motor dysfunction-multiple joint contractures syndrome

description: Recessive intellectual disability-motor dysfunction-multiple joint contractures syndrome is a rare, genetic, syndromic intellectual disability disorder characterized by severe intellectual disability, progressive, postnatal, multiple joint contractures and severe motor dysfunction. Patients present arrest and regression of motor function and speech acquisition, as well as contractures which begin in lower limbs and slowly progress in an ascending manner to include spine and neck, resulting in individuals presenting a specific fixed position.


name: familial omphalocele syndrome with facial dysmorphism

description: Familial omphalocele syndrome with facial dysmorphism is a rare genetic developmental defect during embryogenesis characterized by omphalocele associated with facial dysmorphism including flat face, short, upturned nose, long and wide philtrum and flattened maxillary arch and abnormalities of hands.


rapidly progressive glomerulonephritis

description: Inflammation of the glomeruli that is characterized by a rapid loss in renal function with glomerular crescent formation observed on biopsy; it is often seen in patients with concomitant autoimmune disease, like Goodpasture's syndrome or systemic lupus erythematosus.


name: hereditary sensorimotor neuropathy with hyperelastic skin


name: familial progressive hyper- and hypopigmentation

description: Familial progressive hyper- and hypopigmentation is a rare, genetic, skin pigmentation anomaly disorder characterized by progressive, diffuse, partly blotchy, hyperpigmented lesions that are intermixed with multiple café-au-lait spots, hypopigmented maculae and lentigines and are located on the face, neck, trunk and limbs, as well as, frequently, the palms, soles and oral mucosa. Dispigmentation pattern can range from well isolated café-au-lait/hypopigmented patches on a background of normal-appearing skin to confetti-like or mottled appearance.


cutaneous collagenous vasculopathy

description: Cutaneous collagenous vasculopathy (CCV) is a primary microangiopathy confined to the skin, characterized by multiple and widespread telangiectasias.


bullous diffuse cutaneous mastocytosis

description: Bullous diffuse cutaneous mastocytosis (BDCM) is a form of diffuse cutaneous mastocytosis (DCM) characterized by generalized erythroderma and severe blistering associated with the accumulation of mast cells in the skin.


name: pseudoxanthomatous diffuse cutaneous mastocytosis

description: Pseudoxanthomatous diffuse cutaneous mastocytosis (PDCM) is a rare form of diffuse cutaneous mastocytosis (DCM) characterized by yellow-orange infiltrated and xanthogranuloma-like lesions with only limited blistering.


name: intralobar congenital pulmonary sequestration


name: extralobar congenital pulmonary sequestration


name: communicating congenital bronchopulmonary-foregut malformation


name: congenital pulmonary airway malformation type 0


name: congenital pulmonary airway malformation type 1


name: congenital pulmonary airway malformation type 2


name: congenital pulmonary airway malformation type 3


name: congenital pulmonary airway malformation type 4


panuveitis

description: A disorder characterized by inflammation of the entire uvea which includes the iris, ciliary body, and choroid. Causes include systemic infections, sarcoidosis, and cancers.


idiopathic posterior uveitis

description: Idiopathic posterior uveitis is a rare, potentially sight-threatening, ocular disease, not attributed to any specific ocular or systemic cause, characterized by focal, multifocal or diffuse non-infectious inflammation in the posterior uvea (i.e. choroiditis, chorioretinitis, retinitis and neuroretinitis). Visual morbidity due to complications (including cystoid macular edema and choroidal neovascularization) has been reported.


idiopathic panuveitis

description: Idiopathic panuveitis is a rare inflammatory eye disease, of unknown etiology, characterized by generalized inflammation of the uvea (iris, ciliary body, choroid), retina and vitreous with consequent ciliary spasm and posterior synechiae formation, leading to acute or chronic, unilateral or bilateral visual impairment and ocular discomfort or pain. Patients present an increased risk of development of cataracts, secondary glaucoma, cystoid macular edema and/or retinal detachment. It could potentially result in vision loss.


syndromic recessive X-linked ichthyosis

description: Syndromic recessive X-linked ichthyosis (RXLI) refers to the cases of RXLI that are associated with extracutaneous manifestations as part of a syndrome.


name: autosomal recessive congenital ichthyosis

description: Autosomal recessive form of inherited ichthyosis.


self-healing collodion baby

description: Self-healing collodion baby (SHCB) is a minor variant of autosomal recessive congenital ichthyosis (ARCI) characterized by the presence of a collodion membrane at birth that heals within the first weeks of life.


acral self-healing collodion baby

description: Acral self-healing collodion baby (SHCB) is a variant of SHCB characterized by the presence at birth of a collodion membrane only at the extremities.


X-linked ichthyosis syndrome

description: X-linked form of inherited ichthyosis syndromic form.


name: spastic paraplegia-facial-cutaneous lesions syndrome

description: Spastic paraplegia-facial-cutaneous lesions syndrome is a complex form of hereditary spastic paraplegia characterized by delays in motor development followed by a slowly progressive spastic paraplegia (affecting mainly lower extremities) associated with a desquamating facial rash with butterfly distribution (presenting at around two months of age) and dysarthria. There have been no further descriptions in the literature since 1982.


frontotemporal dementia

description: Frontotemporal dementia (FTD) comprises a group of neurodegenerative disorders, characterized by progressive changes in behavior, executive dysfunction and language impairment, as a result of degeneration of the medial prefrontal and frontoinsular cortices. Four clinical subtypes have been identified: semantic dementia, progressive non-fluent aphasia, behavioral variant FTD and right temporal lobar atrophy.


autoimmune polyendocrinopathy

description: A group of diverse conditions that are characterized by spontaneous, multi-organ autoimmunity, which target both endocrine (adrenal, gonad, pancreatic islet cells, parathyroid, pituitary, thyroid) and non-endocrine (gastrointestinal, integumentary, lymphatic) tissues.


young-onset Parkinson disease

description: A form of Parkinson disease (PD) characterized by an age of onset between 21-45 years, rigidity, painful cramps followed by tremor, bradykinesia, dystonia, gait complaints and falls, and other non-motor symptoms. A slow disease progression and a more pronounced response to dopaminergic therapy are also observed in most YOPD forms.


demodicidosis

description: Demodicidosis is a rare parasitic cutaneous disease due to Demodex mite infestation characterized by variable degrees of spinulosis, erythema, papules, and pustules, usually accompanied by a burning or pruritic sensation. Face (incl. eyelids) is most frequently affected, but ear canal, scalp, neck, back, chest, nipples, buttocks, penis, and extremity (legs and arms) involvement have also been observed. Dermoscopic examination reveals Demodex tails and follicular openings.


name: renal caliceal diverticuli-deafness syndrome


alveolar echinococcosis

description: Alveolar echinococcosis (AE) is a rare parasitic disorder that occurs after ingestion of eggs of Echinococcus multilocularis. AE is characterized by an initial asymptomatic incubation period of many years followed by a chronic course where the clinical manifestations include epigastric pain and jaundice.


name: DeSanto-Shinawi Syndrome due to 10p11.21p12.31 microdeletion


penoscrotal transposition

description: Penoscrotal transposition (PST) is a rare congenital genital anomaly in which the scrotum is positioned superior and anterior to the penis. PST may present with a broad spectrum of anomalies ranging from simple shawl scrotum (doughnut scrotum) to very complex extreme transposition with craniofacial, central nervous system, cardiac, gastrointestinal, urological, and other genital (undescended testicles, hypospadias, chordee) malformations. Growth deficiency and intellectual disability may also be noticed (60% of cases).


tempi syndrome

description: TEMPI syndrome is a rare multi-systemic disease characterized by the presence of Telangiectasias, Erythrocytosis with elevated erythropoietin levels, Monoclonal gammopathy, Perinephric-fluid collections, and Intrapulmonary shunting.


IgG4-related disease

description: A recently described mass-forming lesion that occurs in the pancreas, submandibular glands, lacrimal glands, lymph nodes, and hepatobiliary tract. It is characterized by the presence of marked tissue sclerosis and infiltration by numerous plasma cells. The plasma cells show immunohistochemical staining for IgG4 and the serum IgG4 levels are often increased.


familial intrahepatic cholestasis

description: An instance of intrahepatic cholestasis that is caused by an inherited modification of the individual's genome.


name: reversible cerebral vasoconstriction syndrome

description: Reversible cerebral vasoconstriction syndrome (RCVS) is an infrequent cerebrovascular disorder characterized by severe headaches with or without focal neurological deficits or seizures, and a reversible segmental and multifocal vasoconstriction of cerebral arteries.


name: well-differentiated fetal adenocarcinoma of the lung

description: Well-differentiated fetal adenocarcinoma (WDFA) of the lung is a rare, primary, low-grade, bronchopulmonary neoplasm characterized by a well-circumscribed, usually large, pulmonary mass that is histologically composed of glycogen-rich neoplastic glands and tubules that resemble fetal lungs at 10 to 16 weeks of gestation and benign adjacent stroma. It typically presents with chest pain, cough, dyspnea, hemoptysis and/or generalized, non-specific symptoms, such as night sweats, lethargy, poor appetite and weight loss.


name: glycerol kinase deficiency, infantile form

description: Infantile glycerol kinase deficiency (GKD) is a severe form of GKD characterized clinically by poor feeding, failure to thrive, salt-wasting dehydration, vomiting, Addisonian pigmentation, hypotonia, and disorders of consciousness. Some patients have complex GKD associated with adrenal hypoplasia congenita and/or Duchenne muscular dystrophy (DMD) with manifestations including intellectual deficit, dysmorphic facial features, abnormal external genitalia, strabismus, seizures, and progressive lethargy.


name: glycerol kinase deficiency, juvenile form

description: Juvenile glycerol kinase deficiency (GKD) is an uncommon form of GKD characterized by Reye-like clinical manifestations including episodic vomiting, acidemia, and disorders of consciousness.


glycerol kinase deficiency, adult form

description: Adult glycerol kinase deficiency (GKD) is an uncommon form of GKD diagnosed fortuitously and characterized by pseudohypertriglyceridemia in otherwise healthy adults.


name: chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids


acute zonal occult outer retinopathy

description: Acute zonal occult outer retinopathy (AZOOR) is a rare condition that affects the eyes. People with this condition may experience a sudden onset of photopsia (the presence of perceived flashes of light) and an area of partial vision loss (a blindspot). Other symptoms may include 'whitening of vision' or blurred vision. Although anyone can be affected, the condition is most commonly diagnosed in young women (average age 36.7 years). The underlying cause of AZOOR is currently unknown; however, some researchers have proposed that infectious agents (such as viruses) or autoimmunity may play a role in the development of the condition. No treatment has been proven to improve the visual outcome of AZOOR; however, systemic corticosteroids are the most commonly used therapy.


congenital pericardium anomaly

description: Congenital pericardium anomaly comprises a group of rare congenital cardiac malformations characterized by the complete (Congenital complete agenesis of pericardium) or partial absence of the pericardium (Congenital partial agenesis of pericardium), or by the presence of pericardial cysts (Pleuropericardial cyst).


pericardial and diaphragmatic defect

description: Pericardial and diaphragmatic defect is a rare combination of absent pericardium with congenital diaphragmatic defect.


name: qualitative or quantitative defects of tropomyosin


ocular albinism

description: Albinism affecting the eye in which pigment of the hair and skin is normal or only slightly diluted. The classic type is X-linked (Nettleship-Falls), but an autosomal recessive form also exists. Ocular abnormalities may include reduced pigmentation of the iris, nystagmus, photophobia, strabismus, and decreased visual acuity.


syndromic oculocutaneous albinism

description: A oculocutaneous albinism that is part of a larger syndrome.