acute myeloid leukemia

description: Acute myeloid leukemia (AML) is a group of neoplasms arising from precursor cells committed to the myeloid cell-line differentiation. All of them are characterized by clonal expansion of myeloid blasts. AML manifests by fever, pallor, anemia, hemorrhages and recurrent infections.


Li-Fraumeni syndrome

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

description: A rare cancer predisposition syndrome characterized by the early-onset of multiple primary cancers such as breast cancer, soft tissue and bone sarcomas, brain tumors and adrenal cortical carcinoma (ACC).


mantle cell lymphoma

description: Mantle cell lymphoma is a rare form of malignant non-Hodgkin lymphoma affecting B lymphocytes in the lymph nodes in a region called the ``mantle zone''.


branchiootic syndrome

description: Branchiootic syndrome is a rare, genetic multiple congenital anomalies syndrome characterized by second branchial arch anomalies (branchial cysts and fistulae), malformations of the outer, middle and inner ear associated with sensorineural, mixed or conductive hearing loss, and the absence of renal abnormalities. Typical ear findings consist of malformed auricles (e.g. lop or cupped ears), preauricular pits and/or tags, and middle and/or inner ear dysplasias (including cochlear, vestibular and semicircular channel hypoplasia, malformation of the ossicles and of middle ear space).


lichen planopilaris

description: Lichen planopilaris (LPP) is a rare cutaneous variant of lichen planus which affects hair follicles. It may occur on its own or in association with more common forms of lichen planus, usually classical type and/or oral lichen planus.


myelodysplastic syndrome

description: A clonal hematopoietic disorder characterized by dysplasia and ineffective hematopoiesis in one or more of the hematopoietic cell lines. The dysplasia may be accompanied by an increase in myeloblasts, but the number is less than 20%, which, according to the WHO guidelines, is the requisite threshold for the diagnosis of acute myeloid leukemia. It may occur de novo or as a result of exposure to alkylating agents and/or radiotherapy. (WHO, 2001)


vasculitis

description: Vasculitis represents a clinically heterogenous group of diseases of multifactorial etiology characterized by inflammation of either large-sized vessels (large-vessel vasculitis, e.g. Giant-cell arteritis and Takayasu arteritis), medium-sized vessels (medium-vessel vasculitis e.g. polyarteritis nodosa and Kawasaki disease), or small-sized vessels (small-vessel vasculitis, e.g. granulomatosis with polyangiitis, microscopic polyangiitis, immunoglobulin A vasculitis, and cutaneous leukocytoclastic angiitis). Vasculitis occurs at any age, may be acute or chronic, and manifests with general symptoms such as fever, weight loss and fatigue, as well as more specific clinical signs depending on the type of vessels and organs affected. The degree of severity is variable, ranging from life or sight threatening disease (e.g. Behcet disease) to relatively minor skin disease.


description: A lipodystrophy characterized by the association of lipoatrophy, hypertriglyceridemia, hepatomegaly and acromegaloid features. BSCL belongs to the group of extreme insulin resistance syndromes, which also includes leprechaunism, Rabson-Mendenhall syndrome, acquired generalized lipodystrophy, and types A and B insulin resistance.


Roch-Leri mesosomatous lipomatosis

description: Roch-Leri mesosomatous lipomatosis is a rare benign autosomal dominant disorder of fat tissue proliferation characterized by the presence of multiple small lipomas of 2 to 5 cm in diameter in the middle third of the body (i.e. the forearms, trunk, and upper thighs), and which are generally painless and can be easily removed by local anesthesia, provided that they are not too numerous or confluent. There have been no further descriptions in the literature since 1984.


orbital leiomyoma

description: Orbital leiomyoma is a rare benign smooth muscle tumor arising from the walls of orbital vessels characterized by its slow growth and well encapsulated nature. It is usually located in an extraconal position, commonly manifesting with painless proptosis. The tumor is composed of spindle cells arranged in a fibrous stroma rich in dilated sinusoidal capillaries. The nuclei of tumor cells are oval with blunted ends and there are no mitotic figures. Orbital leiomyoma when excised has excellent prognosis for vision and life. One case of orbital leiomyosarcoma that possibly represents sarcomatous change in an orbital leiomyoma following radiation treatment has been reported.


Lyell syndrome

description: Lyell syndrome is an extended form of toxic epidermal necrolysis characterized by destruction and detachment of the skin epithelium and mucous membranes involving more than 30% of the body surface area.


familial tumoral calcinosis

description: Tumoral calcinosis is a phosphocalcic metabolism anomaly, particularly among younger age groups and characterized by the presence of calcified masses in the juxta-articular regions (hip, elbow, ankle and scapula) without joint involvement. Histologically, lesions dysplay collagen necrobiosis, followed by cyst formation and a foreign-body response with calcification Two forms of tumoral calcinosis have been described: normocalcemic tumoral calcinosis and familial tumoral calcinosis.


Wyburn-Mason syndrome

description: Wyburn-Mason syndrome or Bonnet-Dechaume-Blanc syndrome is characterized by the association of arteriovenous malformations of the maxilla, retina, optic nerve, thalamus, hypothalamus and cerebral cortex.


Cobb syndrome

description: Cobb syndrome is defined by the association of vascular cutaneous (venous or arteriovenous), muscular (arteriovenous), osseous (arteriovenous) and medullary (arteriovenous) lesions at the same metamere or spinal segment. This segmental distribution may involve one or many of the 31 metameres present in humans. Only 16% of the medullary lesions are multiple and have a clearly metameric distribution.


Plummer-Vinson syndrome

description: Plummer-Vinson or Paterson-Kelly syndrome presents as a classical triad of dysphagia, iron-deficiency anemia and esophageal webs.


thrombotic thrombocytopenic purpura

description: Thrombotic thrombocytopenic purpura (TTP) is an aggressive and life-threatening form of thrombotic microangiopathy (TMA) characterized by profound peripheral thrombocytopenia, microangiopathic hemolytic anemia (MAHA) and organ failure of variable severity and is comprised of congenital TTP and acquired TTP.


name: primary cutaneous CD30+ T-cell lymphoproliferative disease


primary cutaneous lymphoma

description: Cutaneous lymphoma is a heterogeneous entity with respect to its clinical and pathological features, evolutive profile, prognosis, molecular etiology and response to therapy. These specifications have been taken into account in recent classifications, which have placed particular importance on the prognostic implications of these different entities.


posterior cortical atrophy

description: Posterior Cortical Atrophy (PCA) is a rare progressive neurodegenerative disorder with a typical onset between 50-65 years of age characterized by progressive impairment of higher visual processing skills and other posterior cortical functions without any evidence of ocular abnormalities.


name: corticosteroid-sensitive aseptic abscess syndrome

description: Corticosteroid-sensitive aseptic abscesses syndrome is a well-defined entity within the group of autoinflammatory disorders.


left ventricular noncompaction

description: Left ventricular noncompaction (LVNC) is a rare cardiomyopathy characterized anatomically by prominent left ventricular trabeculae and deep intratrabecular recesses causing progressive systolic and diastolic dysfunction, conduction abnormalities, and occasionally thromboembolic events.


hepatocellular adenoma

description: A benign epithelial neoplasm arising from the hepatocytes. Grossly, it appears as a soft, round mass which often contains areas of hemorrhage and necrosis. Morphologically, the neoplastic cells resemble normal hepatocytes and form plates separated by sinusoids. Most patients have a history of contraceptive or anabolic steroids use.


sarcocystosis

description: Infection of the striated muscle of mammals by parasites of the genus sarcocystis. Disease symptoms such as vomiting, diarrhea, muscle weakness, and paralysis are produced by sarcocystin, a toxin produced by the organism.


description: A rare glomerular disease characterized by a pattern of glomerular injury on kidney biopsy with characteristic light microscopic changes: mesangial hypercellularity, endocapillary proliferation, and thickening of the glomerular basement membrane (GBM). On the basis of immunofluorescence (IF) the disorder is divided into C3 glomerulopathy (C3G) or immunoglobulin-mediated membranoproliferative glomerulonephritis. Through electron microscopy C3G is further divided into Dense deposit disease, with highly electrondense deposits in the glomerular basement membrane, and C3 glomerulonephritis, with mesangial, intramembranous, subendothelial and subepithelial deposits. Secondary causes (autoimmune, infectious, malignancies) are excluded.


diffuse large B-cell lymphoma

description: Diffuse large B-cell lymphoma is the most common subtype of non-Hodgkin lymphoma (NHL) in adults characterized by a median age of presentation in the sixth decade of life (but also rarely occurring in adolescents and children) with the initial presentation being single or multiple rapidly growing masses (that may or may not be painful) in nodal or extranodal sites (such as thyroid, skin, breast, gastrointestinal tract, testes, bone, or brain) and that can be accompanied by symptoms of fever, night sweats and weight loss. DLBCL has an aggressive disease course, with the elderly having a poorer prognosis than younger patients, and with relapses being common.


follicular lymphoma

description: Follicular lymphoma is a form of non-Hodgkin lymphoma characterized by a proliferation of B cells whose nodular structure of follicular architecture is preserved.


craniopharyngioma

description: A benign, partly cystic, epithelial tumor of the sellar region, presumably derived from Rathke pouch epithelium. It affects mainly children and young adults. There are two clinicopathological forms: adamantinomatous craniopharyngioma and papillary craniopharyngioma. The most significant factor associated with recurrence is the extent of surgical resection, with lesions greater than 5 cm in diameter carrying a markedly worse prognosis. (Adapted from WHO)


non-Hodgkin lymphoma

description: Distinct from Hodgkin lymphoma both morphologically and biologically, non-Hodgkin lymphoma (NHL) is characterized by the absence of Reed-Sternberg cells, can occur at any age, and usually presents as a localized or generalized lymphadenopathy associated with fever and weight loss. The clinical course varies according to the morphologic type. NHL is clinically classified as indolent, aggressive, or having a variable clinical course. NHL can be of B-or T-/NK-cell lineage.


oculocutaneous albinism

description: Oculocutaneous albinism (OCA) describes a group of inherited disorders of melanin biosynthesis characterized by a generalized reduction in pigmentation of hair, skin and eyes and variable ocular findings including nystagmus, reduced visual acuity and photophobia. Variants include OCA1A (the most severe form), OCA1B, OCA1-minimal pigment (OCA1-MP), OCA1-temperature sensitive (OCA1-TS), OCA2, OCA3, OCA4, OCA5, OCA6 and OCA7.


maturity-onset diabetes of the young

description: MODY (maturity-onset diabetes of the young) is a rare, familial, clinically and genetically heterogeneous form of diabetes characterized by young age of onset (generally 10-45 years of age) with maintenance of endogenous insulin production, lack of pancreatic beta-cell autoimmunity, absence of obesity and insulin resistance and extra-pancreatic manifestations in some subtypes.


Cushing syndrome

description: Cushing's syndrome (CS) encompasses a group of hormonal disorders caused by prolonged and high exposure levels to glucocorticoids that can be of either endogenous (adrenal cortex production) or exogenous (iatrogenic) origin.


malakoplakia

description: Malakoplakia is a chronic multisystem granulomatous inflammatory disease characterized by the presence of single or multiple soft plaques on various organs of the body.


hypotrichosis simplex

description: Hypotrichosis simplex (HS) or hereditary hypotrichosis simplex (HHS) is characterized by reduced pilosity over the scalp and body (with sparse, thin, and short hair) in the absence of other anomalies.


name: carcinoma of gallbladder and extrahepatic biliary tract

description: Carcinoma of the gallbladder (GBC) is the most common and aggressive form of biliary tract cancer (BTC) usually arising in the fundus of the gallbladder, rapidly metastasizing to lymph nodes and distant sites.


McCune-Albright syndrome

description: McCune-Albright syndrome (MAS) is classically defined by the clinical triad of fibrous dysplasia of bone (FD), cafe-au-lait skin spots, and precocious puberty (PP).


peripartum cardiomyopathy

description: Peripartum cardiomyopathy (PPCM) is an idiopathic, potentially fatal form of dilated cardiomyopathy that develops during the final month of pregnancy or within five months after delivery.


Meckel syndrome

description: A rare, lethal, genetic, multiple congenital anomaly disorder characterized by the triad of brain malformation mainly occipital encephalocele, large polycystic kidneys, and polydactyly as well as associated abnormalities that may include cleft lip/palate, cardiac and genital anomalies, central nervous system (CNS) malformations, liver fibrosis, and bone dysplasia.


cold agglutinin disease

description: Cold agglutinin disease is a type of autoimmune hemolytic anemia defined by the presence of cold autoantibodies (autoantibodies which are active at temperatures below 30B0C).


22q11.2 deletion syndrome

description: 22q11.2 deletion syndrome (DS) is a chromosomal anomaly which causes a congenital malformation disorder whose common features include cardiac defects, palatal anomalies, facial dysmorphism, developmental delay and immune deficiency.


microphthalmia, Lenz type

description: A very rare X-linked inherited form of syndromic microphthalmia characterized by unilateral or bilateral microphthalmia (and/or clinical anophthalmia) with or without coloboma in addition to a range of extraocular manifestations such as microcephaly, malformed ears, dental abnormalities (i.e. irregular shape of incisors), skeletal anomalies (duplicated thumbs, syndactyly, clinodactyly, camptodactyly), urogenital anomalies (hypospadias, cryptorchidism, renal dysgenesis, hydroureter) and mild to severe intellectual disability. It is allelic to two disorders: oculofaciocardiodental syndrome and premature aging appearance-developmental delay-cardiac arrhythmia syndrome.


name: familial or sporadic hemiplegic migraine

description: Hemiplegic migraine (HM) is a rare variety of migraine with aura characterized by the presence of a motor weakness during the aura. Hemiplegic migraine has two main forms depending on the familial history: patients with at least one first- or second-degree relative who has aura including motor weakness have familial hemiplegic migraine (FHM); patients without such familial history have sporadic hemiplegic migraine (SHM).


human prion disease

description: Prion diseases are a group of rare transmissible disorders characterized by progressive debilitating neurological manifestations due to spongiform changes with an invariably fatal course. The disorders all involve accumulation of an abnormal prion protein in the central nervous system with no specific immunological response. Sporadic Creutzfeldt-Jakob disease (CJD) is the most frequent form accounting for about 85% of prion disease cases. The other forms of prion disease are genetic (5-15%) and include inherited CJD, fatal familial insomnia (FFI), and Familial Alzheimer-like prion disease. Acquired forms (< 5%) include iatrogenic CJD and variant CJD (vCDJ).


SUNCT syndrome

description: SUNCT syndrome (Short-lasting Unilateral Neuralgiform headache attacks with Conjunctival injection and Tearing) is a primary headache disorder characterized by unilateral trigeminal pain that occurs in association with ipsilateral cranial autonomic symptoms (conjunctival injection and tearing).


name: medial condensing osteitis of the clavicle


monosomy 21

description: Monosomy 21 is a chromosomal anomaly characterized by the loss of variable portions of a segment of the long arm of chromosome 21 that leads to an increased risk of birth defects, developmental delay and intellectual deficit.


mucolipidosis type III, alpha/beta

description: Mucolipidosis III alpha/beta (MLIII alpha/beta) is a lysosomal disorder characterized by progressive slowing of the growth rate from early childhood, stiffness and pain in joints, gradual coarsening of facial features, moderate developmental delay and mild intellectual disability in most patients.


cirrhotic cardiomyopathy

description: Cirrhotic cardiomyopathy is the term used to describe a constellation of features indicative of abnormal heart structure and function in patients with cirrhosis. These include systolic and diastolic dysfunction, electrophysiological changes, and macroscopic and microscopic structural changes.


Mazabraud syndrome

description: Mazabraud syndrome is a rare primary bone dysplasia characterized by the association of fibrous dysplasia with intramuscular myxomas. Fibrous dysplasia (usually polyostotic, sometimes monostotic) occurs during the growth period and can be asymptomatic or can present with pain, skeletal deformities or fractures while intramuscular myxoma, associated with polyostotic fibrous dysplasia is usually multifocal, typically occurring in the vicinity of skeletal lesions, and presents in adulthood as a painless soft-tissue mass (most commonly in the thigh). Although it is a benign condition, local recurrences of myxomas after incomplete excision and malignant transformation of a fibrous dysplastic lesion into osteogenic sarcoma have been reported.


hairy cell leukemia

description: Hairy cell leukemia (HCL) is a rare type of leukemia in which abnormal B-lymphocytes are present in the bone marrow, spleen and peripheral blood. It is a slowly progressive chronic lymphocytic leukemia (CLL). The name comes from the abnormally shaped lymphocytes with hair-like projections.


osteoblastoma

description: A rare benign bone-forming neoplasm usually arising from the spine. It is a well-circumscribed lytic tumor that varies in size. The tumor is composed of woven bone trabeculae and shares similar histologic characteristics with the osteoid osteoma. Surgical curettage is the treatment of choice. The prognosis is excellent.


mucopolysaccharidosis type 3

description: Mucopolysaccharidosis type III (MPS III) is a lysosomal storage disease belonging to the group of mucopolysaccharidoses and characterized by severe and rapid intellectual deterioration.


mucopolysaccharidosis type 4

description: A lysosomal storage disease belonging to the group of mucopolysaccharidoses, and characterized by spondylo-epiphyso-metaphyseal dysplasia. It exists in two forms, A and B.


muscle-eye-brain disease

description: A rare, congenital muscular dystrophy due to dystroglycanopathy characterized by early onset muscular dystrophy, severe muscular hypotonia, severe mental retardation and typical brain and eye malformations, including pachygyria, polymicrogyria, agyria, brainstem and cerebellar structural anomalies, severe myopia, glaucoma, optic nerve and retinal hypoplasia. Patients may present with seizures, macrocephaly or microcephaly, microphthalmia, and congenital contractures. Depending on the severity, limited motor function is acquired. Less severe cases have been reported.


congenital myasthenic syndrome

description: Congenital myasthenic syndrome (CMS) is a group of genetic disorders of impaired neuromuscular transmission at the motor endplate characterized by fatigable muscle weakness.


furuncular myiasis

description: Furuncular myiasis in humans is caused by two species: the Cayor worm (larvae of the African tumbu fly Cordylobia anthropophaga) and the larvae of the human botfly (Dermatobia hominis).


myofibrillar myopathy

description: Myofibrillar myopathy (MFM) describes a group of skeletal and cardiac muscle disorders, defined by the disintegration of myofibrils and aggregation of degradation products into intracellular inclusions, and is typically clinically characterized by slowly-progressive muscle weakness, which initially involves the distal muscles, but is highly variable and that can affect the proximal muscles as well as the cardiac and respiratory muscles in some patients.


gestational trophoblastic neoplasm

description: A diverse group of pregnancy-related tumors characterized by excessive proliferation of trophoblasts. Representative examples include hydatidiform mole, gestational choriocarcinoma, and placental site trophoblastic tumor.


McLeod neuroacanthocytosis syndrome

description: A form of neuroacanthocytosis and is characterized clinically by a Huntington's disease-like phenotype with an involuntary hyperkinetic movement disorder, psychiatric manifestations and cognitive alterations, and biochemically by absence of the Kx antigen and by weak expression of the Kell antigens.


rhombencephalosynapsis

description: Rhombencephalosynapsis (RS) is a rare malformation of the cerebellum characterized by the association of agenesis (total or partial) of the vermis and fusion of the cerebellar hemispheres.


centronuclear myopathy

description: Centronuclear myopathy (CNM) is an inherited neuromuscular disorder characterized by clinical features of a congenital myopathy and centrally placed nuclei on muscle biopsy.


multiminicore myopathy

description: A hereditary neuromuscular disorder characterized by multiple cores on muscle biopsy and clinical features of a congenital myopathy.


distal myopathy

description: Distal myopathy refers to a group of muscle diseases which share the clinical pattern of predominant weakness and atrophy beginning in the feet and/or hands.


description: 3-methylcrotonyl-CoA carboxylase deficiency (3-MCCD) is an inherited disorder of leucine metabolism characterized by a highly variable clinical picture ranging from metabolic crisis in infancy to asymptomatic adults.


name: distal myopathy with vocal cord weakness

description: Distal myopathy with vocal cord and pharyngeal weakness is an adult-onset, autosomal dominant muscular disease which is characterized by muscle weakness in the feet and hands, combined with vocal or swallowing dysfunction.


argyria

description: Argyria is a rare dermatosis, which can be either localized or systemic, that occurs after prolonged contact and absorption of silver containing compounds over a period of years and that is characterized by irreversible blue-gray to gray-black staining of skin, fingernails and/or mucous membranes, most evident on sun exposed areas of the skin. Silver exposure is usually occupational but may also occur through dental amalgams, the ingestion of colloidal silver, acupuncture needles, orthopedic implants and topical medications (such as silver sulfadiazine).


parietal foramina

description: Enlarged parietal foramina (EPF) is a developmental defect, characterized by variable intramembranous ossification defects of the parietal bones, which is either asymptomatic, symptomatic (headaches, nausea, vomiting, intellectual disability) or associated with other pathologies.


Loeys-Dietz syndrome

description: Loeys-Dietz syndrome is a rare genetic connective tissue disorder characterized by a broad spectrum of craniofacial, vascular and skeletal manifestations with four genetic subtypes described forming a clinical continuum.


recurrent respiratory papillomatosis

description: Recurrent respiratory papillomatosis is a rare respiratory disease characterized by the development of exophytic papillomas, affecting the mucosa of the upper aero-digestive tract (with a strong predilection for the larynx), caused by an infection with human papilloma virus. Symptoms at presentation may include hoarseness, chronic cough, dyspnea, recurrent upper respiratory infections, pneumonia, dysphagia, stridor, and/or failure to thrive.


idiopathic bronchiectasis

description: Idiopathic bronchiectasis (IB) is a progressive lung disease characterized by chronic dilation of the bronchi and destruction of the bronchial walls in the absence of any underlying cause (such as post infectious disease, aspiration, immunodeficiency, congenital abnormalities and ciliary anomalies).


pudendal neuralgia

description: Pudendal neuralgia (PN) is a chronic neuropathic pain, aggravated by sitting and for which no organic cause can be found by imaging studies. It is often associated with pelvic dysfunction.


nemaline myopathy

description: Nemaline myopathy (NM) encompasses a large spectrum of myopathies characterized by hypotonia, weakness and depressed or absent deep tendon reflexes, with pathologic evidence of nemaline bodies (rods) on muscle biopsy.


potassium-aggravated myotonia

description: Potassium-aggravated myotonia (PAM) is a muscular channelopathy presenting with a pure myotonia dramatically aggravated by potassium ingestion, with variable cold sensitivity and no episodic weakness. This group includes three forms: myotonia fluctuans, myotonia permanens, and acetazolamide-responsive myotonia.


congenital primary megaureter

description: An idiopathic condition in which the bladder and bladder outlet are normal but the ureter is dilated to some extent. It may be obstructed, refluxing or unobstructed and not refluxing.


familial melanoma

description: Familial melanoma (FM) is a rare inherited form of melanoma characterized by development of histologically confirmed melanoma in two first degrees relatives or more relatives in an affected family.


hereditary methemoglobinemia

description: Methemoglobinemia inherited in an autosomal recessive pattern. It is caused by deficiency of the enzyme NADH methemoglobin reductase or the presence of abnormal hemoglobin M. It presents with cyanosis early in life. There is no evidence of cardiopulmonary disease present.


description: Homocystinuria without methylmalonic aciduria is an inborn error of vitamin B12 (cobalamin) metabolism characterized by megaloblastic anemia, encephalopathy and, sometimes, developmental delay, and associated with homocystinuria and hyperhomocysteinemia. There are three types of homocystinuria without methylmalonic aciduria; cblE, cblG and cblD-variant 1 (cblDv1).


Alport syndrome

description: A rare renal disease characterized by glomerular nephropathy with hematuria progressing to end-stage renal disease (ESRD), frequently associated with sensorineural deafness, and occasionally with ocular anomalies.


name: short stature due to isolated growth hormone deficiency with X-linked hypogammaglobulinemia


iniencephaly

description: Iniencephaly is a rare form of neural tube defect in which a malformation of the cervico-occipital junction is associated with a malformation of the central nervous system.


craniorachischisis

description: Craniorachischisis is the most severe form of neural tube defect in which both the brain and spinal cord remain open to varying degrees. It is a very rare congenital malformation of the central nervous system.


isolated oxycephaly

description: Isolated oxycephaly is a late-appearing form of nonsyndromic craniosynostosis characterized by premature fusion of both the coronal and sagittal sutures, and, in some cases, of the lambdoid sutures. Compensatory growth in the region of the anterior fontanel results in a pointed or cone-shaped skull.


name: patterned dystrophy of the retinal pigment epithelium


paraneoplastic pemphigus

description: Pemphigus is a group of chronic autoimmune skin diseases characterized by blisters formation on the outer layer of the skin and the mucous membranes. Three clinical forms have been characterized, of which paraneoplastic pemphigus is extremely rare.


neurofibromatosis type 1

description: A clinically heterogeneous, neurocutaneous genetic disorder characterized by cafe-au-lait spots, iris Lisch nodules, axillary and inguinal freckling, and multiple neurofibromas.


schisis association

description: The combination of two or more of the following anomalies: neural tube defects (e.g. anencephaly, encephalocele, spina bifida cystica), cleft lip/palate, omphalocele and congenital diaphragmatic hernia. These anomalies are associated at a higher frequency than would be expected with random combination rates.


name: polyneuropathy associated with IgM monoclonal gammapathy with anti-MAG

description: Polyneuropathy associated with IgM monoclonal gammapathy (MG) with anti-MAG (myelin-associated-glycoprotein) activity is a demyelinating polyneuropathy characterized clinically by sensory ataxia, tremor, paresthesia, and impaired gait.


multifocal motor neuropathy

description: Multifocal motor neuropathy (MMN) is a rare acquired immune-mediatedneuropathy characterized clinically by a purely motor deficit with conduction block and asymmetric multifocal weakness, fasciculations, and cramping.


name: acrofacial dysostosis, Kennedy-Teebi type

description: Acrofacial dysostosis, Kennedy-Teebi type was reported as a new type of acrofacial dysostosis due to the presence of manifestations not usually seen in Nager syndrome (NS) such as microcephaly, blepharophimosis, microtia, a peculiar beakednose, cleft lip and palate, symmetrical involvement of the thumbs and great toes and developmental delay. It has since been suggested that these features can also be a part of the NS phenotype.


benign idiopathic neonatal seizures

description: A rare neonatal epilepsy syndrome characterized by seizures without specific underlying etiology, occurring during the first days of life in infants with an otherwise normal neurological state and no family history of neonatal convulsions. The most commonly partial and clonic seizures usually last for one to three minutes. Repeated seizures may lead to status epilepticus lasting up to 20 hours. Overall, remission rates are high and neurological outcome is favorable.


Niemann-Pick disease type C

description: NPC is a complex lipid storage disease mainly characterized by the accumulation of unesterified cholesterol in the late endosomal/lysosomal compartment.


Tolosa-Hunt syndrome

description: Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterized by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.


Oroya fever

description: An infection that is caused by Bartonella bacilliformis, which is transmitted to humans from infected sandflies. The acute phase (Oroya fever) is characterized by fever, headache, myalgia, enlargement of the lymph nodes, and anemia. The chronic phase (verruga peruana/Peruvian wart) is characterized by benign, eruptive lesions that are bleeding and pruritic, arthralgia, and malaise.


granulomatous mastitis

description: A rare, benign, inflammatory breast disease occurring in premenopausal women shortly after a recent pregnancy. The origin is unknown but it is commonly mistaken for malignancy and sometimes associated with breast feeding and the use of oral contraceptives.


iridocorneal endothelial syndrome

description: Iridocorneal endothelial (ICE) syndrome describes a group of progressive corneal proliferative endotheliopathies comprised of Chandler syndrome, Cogan-Reese syndrome and essential iris atrophy, affecting mainly young adult females and characterized by iris holes and atrophy, papillary distortion, anterior synechiae, corneal edema and often with secondary glaucoma and corneal decompensation as complications


recurrent acute pancreatitis

description: Recurrent acute pancreatitis (RAP) is characterized by repeated attacks of acute pancreatitis (AP), which is defined as an acute inflammatory process of the pancreas with variable involvement of other regional tissues or remote organ systems.


hepatoportal sclerosis

description: Hepatoportal sclerosis (HPS) is a rare disorder characterized by sclerosis of the intrahepatic portal veins, non-cirrhotic portal hypertension, asymptomatic splenomegaly and recurrent variceal bleeding.


IgG4-related thyroid disease

description: Riedel thyroiditis is a fibroinflammatory disorder of the thyroid gland, occurring more frequently in females, characterized a large, hard thyroid mass, and presenting with pressure symptoms (breathing difficulB,ties and dysphagia) or voice hoarseness and aphonia (impingement of recurrent laryngeal nerve). It can often be associated with extracervical fibroinflammatory disorders such as retroperitoneal fibrosis, primary scleroisng cholangitis and autoimmune diseases such as Hashimoto struma, Addison disease, and Biermer disease.


Charcot-Marie-Tooth disease type 2

description: A Charcot-Marie-Tooth disease characterized by abnormalities in the axon of the peripheral nerve cell.


Charcot-Marie-Tooth disease type X

description: A subtype of Charcot-Marie-Tooth disease with genetic defects on the X chromosome.


Charcot-Marie-Tooth disease type 4

description: Charcot-Marie-Tooth disease type 4 (CMT4) belongs to the genetically heterogeneous group of CMT peripheral sensorimotor polyneuropathy diseases.


name: spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2

description: A rare autosomal recessive cerebellar ataxia (ARCA), characterized by progressive cerebellar ataxia associated with frequent oculomotor apraxia, severe neuropathy and an elevated serum alpha-fetoprotein (AFP) level.


Noonan syndrome

description: Noonan Syndrome (NS) is characterized by short stature, typical facial dysmorphism and congenital heart defects.


Leber congenital amaurosis

description: Leber congenital amaurosis (LCA) is a retinal dystrophy defined by blindness and responses to electrophysiological stimulation (Ganzfeld electroretinogram (ERG)) below threshold, associated with severe visual impairment within the first year of life.


LCAT deficiency

description: LCAT (lecithin-cholesterol acyltransferase) deficiency is a rare lipoprotein metabolism disorder characterized clinically by corneal opacities, and sometimes renal failure and hemolytic anemia, and biochemically by severely reduced HDL cholesterol.


perineural cyst

description: Perineural (or Tarlov) cysts are cerebrospinal fluid-filled nerve root cysts most commonly found at the sacral level of the spine, although they can be found in any section of the spine, which can cause progressively painful radiculopathy.


Lhermitte-Duclos disease

description: Lhermitte-Duclos disease (LDD) is a very rare disorder characterized by abnormal development and enlargement of the cerebellum, and an increased intracranial pressure.


multiple endocrine neoplasia type 2

description: Multiple endocrine neoplasia type 2 (MEN2) is a multiple endocrine neoplasia, a polyglandular cancer syndrome characterized by the occurrence of medullary thyroid carcinoma (MTC), pheochromocytoma (PCC), in one variant, primary hyperparathyroidism (PHPT). There are three forms: MEN2A, MEN2B, and familial medullary thyroid carcinoma (FMTC).


kidney Wilms tumor

description: An embryonal pediatric tumor of the kidney which may also be seen rarely in adults. The peak incidence of Wilms tumor is between the second and fifth year of life. Microscopically, it is composed of a mixture of cellular elements (blastemal, stromal, and epithelial). The most common sites of metastasis include the regional lymph nodes, lungs, and liver.


nephronophthisis

description: Progressive tubulointerstitial injury, inherited in an autosomal recessive pattern, caused by mutations in genes involved in ciliary function, which may result in an end stage renal failure.


name: familial idiopathic steroid-resistant nephrotic syndrome

description: Familial idiopathic steroid-resistant nephrotic syndrome is characterized by a nephrotic syndrome with often early onset.


name: benign recurrent intrahepatic cholestasis

description: Benign recurrent intrahepatic cholestasis (BRIC) is a hereditary liver disorder characterized by intermittent episodes of intrahepatic cholestasis, generally without progression to chronic liver damage. BRIC is now believed to belong to a clinical spectrum of intrahepatic cholestatic disorders that ranges from the mild intermittent attacks in BRIC to the severe, chronic and progressive cholestasis seen in progressive familial intrahepatic cholestasis (PFIC).


isolated focal cortical dysplasia

description: Isolated focal cortical dysplasia is a rare, genetic, non-syndromic cerebral malformation due to abnormal neuronal migration disorder characterized by variable-sized, focalized malformations located in any part(s) of the cerebral cortex, which manifests with drug-resistant epilepsy (usually leading to intellectual disability) and behavioral disturbances. Abnormal MRI findings (e.g. abnormal white and/or gray matter signal, blurred gray-white matter junction, localized volume loss, cortical thickening, abnormal gyral pattern, abnormal hippocampus) and variable histopathologic patterns are associated.


congenital isolated hyperinsulinism

description: Congenital isolated hyperinsulinism (CHI), a rare endocrine disease is the most frequent cause of severe and persistent hypoglycemia in the neonatal period and early infancy and is characterized by an excessive or uncontrolled insulin secretion (inappropriate for the level of glycemia) and recurrent episodes of profound hypoglycemia requiring rapid and intensive treatment to prevent neurological sequelae. CHI comprises 2 different forms: diazoxide-sensitive diffuse hyperinsulinism and diazoxide-resistant hyperinsulinism.


Charcot-Marie-Tooth disease type 1

description: Charcot-Marie-Tooth disease type 1 (CMT1) is a group of autosomal dominant demyelinating peripheral neuropathies characterized by distal weakness and atrophy, sensory loss, foot deformities, and slow nerve conduction velocity.


Carpenter syndrome

description: An extremely rare autosomal recessive syndrome characterized by premature closure of cranial sutures leading to cone-shaped head, fusion of the digits, and the presence of more digits than normal. It may be associated with heart defects, single horseshoe-shaped kidney, short stature, undescended testes, and mild mental retardation.


non-histaminic angioedema

description: Angioedema is characterized by the occurrence of transitory and recurrent subcutaneous and/or submucosal edemas resulting in swelling and/or abdominal pain.


omphalocele

description: Omphalocele is an embryopathy classified in the group of abdominal celosomias and is characterized by a large hernia of the abdominal wall, centered on the umbilical cord, in which the protruding viscera are protected by a sac.


name: maternally-inherited progressive external ophthalmoplegia


name: short fifth metacarpals-insulin resistance syndrome

description: A syndrome is characterized by bilateral shortening of the fifth fingers and fifth metacarpals. It has been described in several members of one family. Some members of the family also had spherocytosis and insulin resistance. Transmission is autosomal dominant.


Tako-tsubo cardiomyopathy

description: Takotsubo cardiomyopathy (TC) is a recently described acute cardiac syndrome that mimics acute myocardial infarction and is characterized by ischemic chest symptoms, an elevated ST segment on electrocardiogram, and elevated levels of cardiac disease markers.


osteogenesis imperfecta

description: Osteogenesis imperfecta (OI) comprises a heterogeneous group of genetic disorders characterized by increased bone fragility, low bone mass, and susceptibility to bone fractures with variable severity.


PANDAS

description: PANDAS is an acronym for Pediatric Autoimmune Neuropsychiatric Disorders Associated with a group A beta-hemolytic Streptococcal infection and applied to a subgroup of children with obsessive-compulsive disorder (OCD) and/or tic disorders.


name: sensorineural hearing loss-early graying-essential tremor syndrome

description: Sensorineural hearing loss-early graying-essential tremor syndrome is characterized by the combination of sensorineural hearing loss, early graying of scalp hair and adult onset essential tremor.


cutaneous mastocytosis

description: Cutaneous mastocytosis is a term referring to a group of diseases characterized by abnormal accumulation and proliferation of skin mastocytes. In some cases (most commonly in adults), cutaneous mastocytosis may occur in association with mast cell infiltration of various extracutaneous organs, in which case the disorder is referred to as systemic mastocytosis.


mast cell sarcoma

description: A rare entity characterized by localized but destructive growth of a tumor consisting of highly atypical, immature mast cells.(WHO, 2001)


extracutaneous mastocytoma

description: A localized tumor consisting of mature mast cells. (WHO, 2001) -- 2003


autosomal recessive osteopetrosis

description: An autosomal recessive form of osteopetrosis caused by mutation(s) in at least 8 genes related to osteoclast function. This condition is characterized by the failure of osteoclasts to resorb bone, resulting in impaired bone modeling/remodeling, and skeletal fragility despite increased bone mass; it is also associated with hematopoietic insufficiency, hypocalcemia, disturbed tooth eruption, nerve entrapment syndromes, and growth impairment. Some cases are also associated with progressive neurological deterioration.


otopalatodigital syndrome

description: A form of frontootopalatodigital syndrome, characterized by deafness, cleft palate, and characteristic digital anomalies. OPD syndrome is divided into two forms based on severity: the milder form designated OPD type 1 (OPD1), and the more severe and often lethal form designated OPD type 2 (OPD2). OPD is an X-linked disorder. Two other genetic disorders with features overlapping OPD, frontometaphyseal dysplasia (FMD) and osteodysplasty, Melnick-Needles type (MNS) have been described; thus OPD1, OPD2, FMD, and MNS are allelic disorders.


amoebiasis due to Entamoeba histolytica

description: A parasitic disease caused by the protozoa, Entamoeba histolytica, mainly occurring in tropical regions after the ingestion of an amoebic cyst, and resulting in clinical manifestations that may range from an asymptomatic state to amoebic colitis (violent abdominal pain, a painful contracted feeling around the anal sphincter, blood and mucus in the stools but without the presence of fever), or amoebic liver abscesses (fever, chills, abdominal pain, weight loss, hepatomegaly) that can be fatal if not immediately treated. Extraintestinal involvement elsewhere (i.e. thoracic, hepatic) is extremely rare.


segmental odontomaxillary dysplasia

description: Segmental odontomaxillary dysplasia (SOD) is a rare disorder characterized by unilateral enlargement of the right or left maxillary alveolar bone and gingiva in the region from the back of the canines to the maxillary tuberosity. In the enlarged region, dental abnormalities such as missing teeth, abnormal spacing and delayed eruption occur.


name: thrombocytopenia with congenital dyserythropoietic anemia

description: Thrombocytopenia with congenital dyserythropoietic anemia (CDA) is a rare hematological disorder, seen almost exclusively in males, characterized by moderate to severe thrombocytopenia with hemorrhages with or without the presence of mild to severe anemia.


name: X-linked intellectual disability with isolated growth hormone deficiency


primary cutis verticis gyrata

description: Cutis verticis gyrata (CVG) is a progressive cutaneous disorder predominantly affecting males and characterized by hypertrophy and thickening of the skin of the scalp forming convoluted furrows with deep, tender, and cerebriform cutaneous folds. Hair is usually normal in the furrows and sparse on the folds. CG can be isolated (essential CVG) or associated with other abnormalities such as intellectual deficit, epilepsy, cataract, blindness, and deafness (non essential CVG).


accessory pancreas

description: Accessory pancreas is an asymptomatic embryopathy characterized by the presence of pancreatic tissue in other sites of the body such as the splenic pedicle, gonadic pedicles, intestinal mesentery, duodenum wall, upper jejunum, or, more rarely, the gastric wall, ileum, gallbladder or spleen.


pancreatoblastoma

description: Pancreatoblastoma is a rare malignant epithelial pancreatic neoplasm, most often found in children, which usually presents with the non-specific symptoms of a palpable mass, vomiting abdominal pain, jaundice, and weight loss/failure to thrive, and is characterized histologically by multiple lines of differentiation (acinar, ductal, mesenchymal, neuroendocrine) and the presence of squamoid nests.


amoebiasis due to free-living amoebae

description: Free-living amebae belonging to the genera Acanthamoeba, Balamuthia, Naegleria and Sappinia are important causes of disease in humans and animals. Naegleria fowleri produces an acute, and usually lethal, central nervous system (CNS) disease called primary amebic meningoencephalitis (PAM). Acanthamoeba spp. and Balamuthia mandrillaris are opportunistic free-living amebae capable of causing granulomatous amebic encephalitis (GAE) in individuals with compromised immune systems. Sappinia pedata has been implicated in a case of amebic encephalitis. Naegleria fowleri and Acanthamoeba spp., are commonly found in lakes, swimming pools, tap water, and heating and air conditioning units.


progressive supranuclear palsy

description: A rare late-onset neurodegenerative disease characterized by supranuclear gaze palsy, postural instability, progressive rigidity, and mild dementia.


chromosomal disorder

description: Clinical conditions caused by an abnormal chromosome constitution in which there is extra or missing chromosome material (either a whole chromosome or a chromosome segment). (from Thompson et al., Genetics in Medicine, 5th ed, p429)


name: multiple congenital anomalies/dysmorphic syndrome


leukodystrophy

description: Leukodystrophies are a group of rare, progressive, metabolic, genetic diseases that affect the brain, spinal cord and often the peripheral nerves. Each type of leukodystrophy is caused by a specific gene abnormality that leads to abnormal development or destruction of the white matter (myelin sheath) of the brain. The myelin sheath is the protective covering of the nerve and nerves can't function normally without it. Each type of leukodystrophy affects a different part of the myelin sheath, leading to a range of neurological problems.


inherited hemoglobinopathy

description: An inherited disorder characterized by structural alterations of a globin chain within the hemoglobin molecule.


inborn errors of metabolism

description: An inherited disorder resulting from an enzyme defect in biochemical and metabolic pathways affecting proteins, fats, carbohydrates metabolism or organelle function.


peroxisomal disease

description: A group of congenital disorders of lipid metabolism, caused by loss of the normal peroxisomes. Signs and symptoms include developmental delays, intellectual disability, characteristic facial dysmorphic features, hepatomegaly, and hypotonia.


neuromuscular disease

description: Any disease that impairs the functioning of the muscles, either directly, being pathologies of the voluntary muscle, or indirectly, being pathologies of nerves or neuromuscular junctions


bone neoplasm

description: A benign, intermediate, or malignant neoplasm involving the bone or articular cartilage.


hereditary spastic paraplegia

description: Hereditary spastic paraplegias (HSP) comprise a genetically and clinically heterogeneous group of neurodegenerative disorders characterized by progressive spasticity and hyperreflexia of the lower limbs.


amyloidosis

description: A disorder characterized by the localized or diffuse accumulation of amyloid protein in various anatomic sites. It may be primary, due to clonal plasma cell proliferations; secondary, due to long standing infections, chronic inflammatory disorders, or malignancies; or familial. It may affect the nerves, skin, tongue, joints, heart, liver, spleen, kidneys and adrenal glands.


name: idiopathic steroid-sensitive nephrotic syndrome

description: Steroid-sensitive nephrotic syndrome (SSNS) is a kidney disease defined by selective proteinuria, hypoalbuminaemia and, on renal biopsy, minimal changes without immunoglobulin deposits.


name: congenital membranous nephropathy due to maternal anti-neutral endopeptidase alloimmunization

description: A glomerular disease characterized by severe renal failure and nephrotic syndrome at birth, which rapidly improve in the first weeks of life.


pure hair and nail ectodermal dysplasia

description: Pure hair and nail ectodermal dysplasia is characterized by the association of onychodystrophy and severe hypotrichosis, which is mainly limited to the scalp but may also affect the eyelashes and eyebrows. Less than 20 cases have been reported so far. The mode of transmission is autosomal dominant.


intrahepatic cholestasis

description: A cholestasis characterized by impairment of the bile flow caused by obstruction located in the liver.


name: bilateral acute depigmentation of the iris

description: Bilateral acute depigmentation of the iris (BADI) is characterized by acute onset of bilateral iris depigmentation, pigment dispersion in the anterior chamber, and heavy pigment deposition in the anterior chamber angle. Patients typically present with acute and usually severe photophobia, blurred vision, red eye, and ocular discomfort or pain with a usually self-limiting clinical course. Cases often occur after a flu-like illness, upper respiratory tract infection, and after the use of oral moxifloxacin. When associated with iris epithelial depigmentation, iris transillumination defects and atonic/mydriatic pupil, the condition is referred to as bilateral acute iris transillumination (BAIT) which has an increased risk of severe intractable rise in intraocular pressure.


Bosley-Salih-Alorainy syndrome

description: Bosley-Salih-Alorainy syndrome (BSAS) is characterized by variable horizontal gaze dysfunction, profound and bilateral sensorineural deafness associated commonly with severe inner ear maldevelopment, cerebrovascular anomalies (ranging from unilateral internal carotid artery hypoplasia to bilateral agenesis), cardiac malformation, developmental delay and occasionally autism. The syndrome is caused by homozygous mutations in the HOXA1 gene (7p15.2) and is transmitted in an autosomal recessive manner. The syndrome overlaps clinically and genetically with Athabaskan brain dysfunction syndrome (ABDS,). However unlike ABDS, BSAS does not manifest central hypoventilation.


description: Circumscribed palmoplantar hypokeratosis is an ectodermal dysplasia characterized by circular, well-circumscribed patches of erythematous depressed skin.


warty dyskeratoma

description: A rare, usually solitary, benign epithelial tumor of the skin that appears to arise from a hair follicle. It usually develops in the head and neck region as a nodular lesion with a central keratotic plug.


Ritscher-Schinzel syndrome

description: Cranio-cerebello-cardiac (3C) syndrome is a rare multiple congenital anomalies syndrome characterized by craniofacial (prominent occiput and forehead, hypertelorism, ocular coloboma, cleft palate), cerebellar (Dandy-Walker malformation, cerebellar vermis hypoplasia) and cardiac (tetralogy of Fallot, atrial and ventricular septal defects) anomalies.


proximal spinal muscular atrophy

description: Proximal spinal muscular atrophies are a group of neuromuscular disorders characterized by progressive muscle weakness resulting from the degeneration and loss of the lower motor neurons in the spinal cord and the brain stem nuclei.


alopecia totalis

description: Alopecia totalis is a form of alopecia areata, an inflammatory disease of the hair follicle, characterized by a complete loss of hair of the entire scalp which becomes glabrous.


bullous pemphigoid

description: Bullous pemphigoid (BP) is the most common form of autoimmune bullous dermatosis.


radiation proctitis

description: Radiation proctitis is a rare rectal disease directly induced by pelvic radiotherapy and characterized by rectal bleeding, change in bowel habits, tenesmus and sepsis.


vernal keratoconjunctivitis

description: Vernal keratoconjunctivitis (VKC) is a chronic, severe allergy that affectsthe surfaces of the eyes. It most commonly occurs in boys living in warm, dry climates. Attacks associated with VKC are common in the spring (hence the name 'vernal') and summer but often reoccur in the winter. Signs and symptoms usually begin before 10 years of age and may include hard, cobblestone-like bumps (papillae) on the upper eyelid; sensitivity to light; redness; sticky mucus discharge; andinvoluntary blinking or spasms of the eyelid (blepharospasm).The condition usually subsides at the onset of puberty. It is caused by ahypersensitivity (allergic reaction)to airborne-allergens. Management focuses on preventing 'flare ups' and relieving the symptoms of the condition.


carcinoma of esophagus

description: Esophageal carcinoma (EC) is a tumor arising in the epithelial cells lining the esophagus and can be divided into two subtypes: esophageal squamous cell carcinoma (ESCC) and esophageal adenocarcinoma (EAC).


cholangiocarcinoma

description: A carcinoma that arises from the intrahepatic biliary tree (intrahepatic cholangiocarcinoma) or from the junction, or adjacent to the junction, of the right and left hepatic ducts (hilar cholangiocarcinoma). Grossly, the malignant lesions are solid, nodular, and grayish. Morphologically, the vast majority of cases are adenocarcinomas. Signs and symptoms include malaise, weight loss, right upper quadrant abdominal pain, and night sweats. Early detection is difficult and the prognosis is generally poor.


description: Post-transplant lymphoproliferative disorder (PTLD) is a polyclonal (benign) or clonal (malignant) proliferation of lymphoid cells that develops as a consequence of immunosuppression in a recipient of a solid organ or bone marrow allograft. PTLDs comprise a spectrum ranging from early, Epstein-Barr virus (EBV)-driven polyclonal lymphoid proliferations to EBV-positive or EBV- negative lymphomas of predominantly B-cell or less often T-cell type. (WHO, 2001)


bronchopulmonary dysplasia

description: Bronchopulmonary dysplasia is a chronic respiratory disease that results from complications related to lung injury during the treatment of infant acute respiratory distress syndrome in low-birth-weight premature infants or from abnormal lung development in older infants. Clinical signs are tachypnea, tachycardia and signs of respiratory distress such as intercostal recession, grunting and nasal flaring.


infantile apnea

description: Infantile apnea is a cessation of respiratory air flow that may affect newborns or older children because of neurological impairment of the respiratory rhythm or obstruction of air flow through the air passages. The symptoms include cyanosis, pallor or bradycardia and snoring in case of obstructive apnea.


name: immunodeficiency due to selective anti-polysaccharide antibody deficiency

description: Immunodeficiency due to selective anti-polysaccharide antibody deficiency is characterized by normal immunoglobulin levels (including IgG sub-classes) but impaired polysaccharide responsiveness (IPR).


congenital Epstein-Barr virus infection

description: Congenital Epstein-Barr virus (EBV) infection causes no clinical manifestations in the majority of infants. Indeed, the occurrence of congenital infection with EBV has never been demonstrated conclusively and must be very rare. One case have been reported to present after birth, multiple congenital anomalies (micrognathia, cryptorchidism, central cataracts), dystrophy, generalized hypotonia, hepatosplenomegaly, diffuse petechiae and hematomas and multiple areas of metaphysitis of the long bones at birth. A low birth weight was also reported. No specific follow-up of the fetus is recommended following maternal EBV primary-infection.


plague

description: Plague is a severe bacterial infection caused by the gram-negative bacterium Yersinia pestis.


autoimmune thrombocytopenia

description: An autoimmune form of thrombocytopenia.


neuromyelitis optica

description: A rare inflammatory disease of the central nervous system characterized mainly by attacks of uni- or bilateral optic neuritis (ON) and acute myelitis.


retinal capillary malformation

description: Retinal cavernous hemangioma is a rare, benign, usually unilateral retinal vascular hamartoma that in most cases is asymptomatic but in some patients may present with blurred vision or floaters and that is characterized by the presence of grape-like vacuoles.


name: dentinogenesis imperfecta-short stature-hearing loss-intellectual disability syndrome

description: Dentinogenesis imperfecta-short stature-hearing loss-intellectual disability syndrome is characterized by the association of dentinogenesis imperfecta, delayed tooth eruption, facial dysmorphology, small stature, sensorineural hearing loss and mild intellectual deficit. It has been described in two brothers born to consanguineous parents. Transmission is autosomal recessive.


benign exophthalmos syndrome

description: Benign exophthalmos syndrome is characterized by slowly progressive unilateral exophthalmos and ipsilateral mucosal turbinate hypertrophy, without intraorbital or intranasal lesions.


Sandifer syndrome

description: Sandifer syndrome is a paroxysmal dystonic movement disorder occurring in association with gastro-oesophageal reflux, and, in some cases, hiatal hernia.


renal nutcracker syndrome

description: A rare, syndromic renal disease characterized by the entrapment of left renal vein (LRV) between the superior mesenteric artery (SMA) and the abdominal aorta, resulting in increased luminal pressure, renal hilar varices, hematuria and, at the microscopic level, rupture of thin-walled veins into the collecting system in renal fornices.


Rh deficiency syndrome

description: The Rh deficiency syndrome, also known as Rh-null syndrome, is a blood disorder where people have red blood cells (RBCs) lacking all Rh antigens. The Rh antigens maintain the integrity of the RBC membrane and therefore, RBCs which lack Rh antigens have an abnormal shape. There are two types of Rh deficiency syndrome: The regulator type is associated with many different changes (mutations) in the RHAG gene. The amorph type is caused by inactive copies of a gene (silent alleles) at the RH locus. As a result, the RBCs do not express any of the Rh antigens. The absence of the Rh complex alters the RBC shape, increases its tendency to break down (osmotic fragility), and shortens its lifespan, resulting in a hemolytic anemia that is usually mild. These patients are at risk of having adverse transfusion reactions because they may produce antibodies against several of the Rh antigens and can only receive blood from people who have the same condition. Rh deficiency syndrome is inherited in an autosomal recessive manner. Management is individualized according to the severity of hemolytic anemia.


silent sinus syndrome

description: Silent sinus syndrome is characterized by adult-onset progressive enophthalmos due to collapse of some or all of the maxillary sinus walls.


CANOMAD syndrome

description: CANOMAD syndrome (Chronic Ataxic Neuropathy, Ophthalmoplegia, Monoclonal IgM protein, cold Agglutinins and Disialosyl antibodies) is a rare chronic immune-mediated demyelinating polyneuropathy.


familial thrombocytosis

description: Familial thrombocytosis is a type of thrombocytosis, a sustained elevation of platelet numbers, which affects the platelet/megakaryocyte lineage and may create a tendency for thrombosis and hemorrhage but does not cause myeloproliferation.


cancer-associated retinopathy

description: Cancer associated retinopathy (CAR) is a paraneoplastic disease of the eye associated with the presence of extraocular malignancy and circulating autoantibodies against retinal proteins.


name: benign paroxysmal torticollis of infancy

description: Benign paroxysmal torticollis of infancy (BPTI) is a rare functional disorder characterized by recurrent episodes of torticollic posturing of the head (inclination or tilting of the head to one side) in healthy children.


psychogenic movement disorders

description: Psychogenic movement disorders (PMD) are movement disorders that cannot be attributed to any known structural or neurochemical diseases, but represent the manifestation of an underlying psychiatric illness or malingering. Most cases of PMD fall in the psychiatric diagnostic category of conversion disorders of the motor subtype.


name: obesity due to melanocortin 4 receptor deficiency

description: Melanocortin 4 receptor (MC4R) deficiency is the commonest form of monogenic obesity identified so far. MC4R deficiency is characterized by severe obesity, an increase in lean body mass and bone mineral density, increased linear growth in early childhood, hyperphagia beginning in the first year of life and severe hyperinsulinaemia, in the presence of preserved reproductive function.


inherited retinal dystrophy

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


muscular channelopathy

description: A channelopathy that involves the muscle tissue.


pili bifurcati

description: Pili bifurcati is an uncommon transitory hair shaft dysplasia characterized by segmental duplication of the hair shaft: a ramification generates two parallel branches which fuse to form a single shaft again. Each branch is covered by its own cuticle.


pneumocystosis

description: Human pneumocystosis is caused by an infectious agent, which (after recent nomenclature and taxonomy revisions) is now classed as the fungus Pneumocystis jiroveci. The prevalence is unknown. Pneumocystis jiroveci is an opportunistic infectious agent, developing in immunosuppressed patients. It is an air-borne infection, localized to the lungs. However, extrapulmonary involvement is seen in AIDS patients. The disease manifests progressively with coughing, respiratory problems (dyspnea) and fever, followed by acute respiratory insufficiency and death within a few weeks in untreated cases. The most reliable diagnostic method is bronchoalveolar lavage. The treatment of choice is cotrimoxazole.


idiopathic acute eosinophilic pneumonia

description: Idiopathic acute eosinophilic pneumonia (IAEP) is an eosinophilic pneumonia of undetermined etiology that is characterized by acute febrile hypoxic respiratory failure associated with diffuse radiographic infiltrates and pulmonary eosinophilia, but without concurring allergy or infection.


name: continuous spikes and waves during sleep

description: Continuous spikes and waves during sleep (CSWS) is a rare epileptic encephalopathy of childhood characterized by seizures, an electroencephalographic (EEG) pattern of electrical status epilepticus in sleep (ESES) and neurocognitive regression in at least 2 domains of development.


microscopic polyangiitis

description: Microscopic polyangiitis (MPA) is an inflammatory, necrotizing, systemic vasculitis that affects predominantly small vessels (i.e. small arteries, arterioles, capillaries, venules) in multiple organs.


relapsing polychondritis

description: A rare, clinically heterogeneous, multisystemic inflammatory disease characterized by inflammation of the cartilage and proteoglycan rich structures leading to cartilage damage with joint, ocular and cardiovascular involvement.


polymyositis

description: A rare idiopathic inflammatory myopathy characterized by symmetric proximal muscle weakness and elevated muscle enzymes.


name: global developmental delay-osteopenia-ectodermal defect syndrome

description: This syndrome is characterized by the association of global developmental delay, osteopenia and skin anomalies.


name: tubular renal disease-cardiomyopathy syndrome

description: A syndrome characterized by hypokalaemic metabolic alkalosis secondary to a tubulopathy, hypomagnesaemia with hypermagnesuria, severe hypercalciuria and dilated cardiomyopathy.


name: ossification anomalies-psychomotor developmental delay syndrome

description: Ossification anomalies-psychomotor developmental delay syndrome is characterized by hypomineralisation of the cranial bones, thoracic dystrophy, hypotonia, and abnormal and slender long bones due to an alteration in remodeling during ossification.


name: spinal muscular atrophy-Dandy-Walker malformation-cataracts syndrome


name: visceral neuropathy-brain anomalies-facial dysmorphism-developmental delay syndrome

description: Visceral neuropathy-brain anomalies-facial dysmorphism-developmental delay syndrome is characterized by facial dysmorphology, neuropathic visceral dysmotility, neurogenic megacystis, intracerebral calcifications and developmental delay. It has been described in two siblings (brother and sister) born to consanguineous parents. The girl also had microcephaly and multicystic kidneys. The boy had a more extensive neuropathic visceral disorder, leading clinically to chronic intestinal pseudo-obstruction syndrome (CIPO).


central neurocytoma

description: Central neurocytoma is a very rare brain tumor of young adults (over 100 cases reported worldwide). It is typically found in the lateral ventricles and occasionally in the third ventricle. Symptoms are those of increased intracranial pressure: headache, nausea and vomiting, drowsiness, vision problems and mental changes. Total removal of the tumor is the therapy of choice. Post-operative prognosis is generally good.


Zygomycosis

description: Any infection due to a fungus of the Zygomycota phylum. The disease typically involves the rhino-facial-cranial area, lungs, gastrointestinal tract, skin, or less commonly other organ systems. The infecting fungi have a predilection for invading vessels of the arterial system, causing embolization and subsequent necrosis of surrounding tissue.


non-24-hour sleep-wake syndrome

description: Non-24-hour sleep-wake disorder (non-24 disorder), also known as hypernychthemeral syndrome, is a circadian rhythm sleep disorder characterized by non-synchronization to a 24-hour day leading to insomnia and daytime sleepiness with sometimes severe associated manifestations.


acquired hemophilia

description: Acquired hemophilia is a bleeding disorder that interferes with the body's blood clotting process. Signs and symptoms include prolonged bleeding, frequent nosebleeds, bruising throughout the body, solid swellings of congealed blood (hematomas), hematuria, and gastrointestinal or urologic bleeding. Acquired hemophilia occurs when the body's immune system attacks and disables a certain protein that helps the blood clot. About half of the cases are associated with other conditions, such as pregnancy, autoimmune disease, cancer, skin diseases, or allergic reactions to medications.


acute ackee fruit intoxication

description: Acute ackee fruit intoxication (also referred to as Jamaican vomiting syndrome or sickness) is caused by the ingestion of unripe Blighia sapida fruits. It is a serious intoxication that is frequent in certain countries in the Caribbean and Western Africa. In contrast, it is rare in France and other Western countries. Intoxication leads to toxic hypoglycaemia and inhibition of neoglucogenesis. The hypoglycaemia is caused by the effect of hypoglycin A, which is found in the arils.


porokeratosis of Mibelli

description: Porokeratosis of Mibelli (PM) is a form of porokeratosis that is characterized by the presence of brown single or multiple annular plaques of varying size, that are sometimes confluent, with a distinctive sharply-defined keratotic border.


inherited porphyria

description: Porphyrias constitute a group of eight hereditary metabolic diseases characterized by intermittent neuro-visceral manifestations, cutaneous lesions or by the combination of both.


angiostrongyliasis

description: A foodborne zoonotic disease, endemic to Southeast Asia and the Pacific Islands, caused by the rat lungworm Angiostrongylus cantonensis and that is acquired by the ingestion of the infective larvae on vegetables or in raw or undercooked snails, slugs, land crabs, freshwater shrimps, frogs and lizards. The main feature is eosinophilic meningitis, with clinical manifestations including fever, headache, malaise, fatigue, vomiting, rhinorrhea, blurred vision, diplopia, cough, stiff neck, enteritis, constipation and paraesthesia due to the movement of the worms from the intestines to the lungs, central nervous system and eyes. In severe cases without treatment, coma and death can occur.


name: hereditary thrombophilia due to congenital protein S deficiency

description: Congenital protein S deficiency is an inherited coagulation disorder characterized by recurrent venous thrombosis symptoms due to reduced synthesis and/or activity levels of protein S.


name: hereditary thrombophilia due to congenital protein C deficiency

description: Congenital protein C deficiency is an inherited coagulation disorder characterized by deep venous thrombosis symptoms due to reduced synthesis and/or activity levels of protein C.


name: inherited susceptibility to mycobacterial diseases

description: A rare immunodeficiency syndrome, characterized by a narrow vulnerability to poorly virulent mycobacteria, such as bacillus Calmette-Guerin (BCG) vaccines and environmental mycobacteria (EM), and defined by severe, recurrent infections, either disseminated or localized.


myiasis

description: The infection of a fly larva (maggot) in human tissue, which most commonly occurs in tropical climates. Affected tissues most commonly include skin, especially if open wounds are present, nasal passages, ears, and eyes.


Wolman disease

description: Wolman disease represents the most severe manifestation of lysosomal acid lipase deficiency. Milder phenotypes as a whole are referred to as cholesterol ester storage disease. The acid lipase enzyme plays an essential role in lysosomal hydrolysis of both esterified cholesterol and triglycerides of lipoproteic origin. In Wolman disease, the rarest form of acid lipase deficiency, these lipids accumulate in most tissues.


cholesteryl ester storage disease

description: A form of lysosomal acid lipase deficiency characterized by progressive cholesterol esters and triglyceride accumulation in tissues and organs typically presenting with hepatosplenomegaly, liver dysfunction and/or dyslipidemia.


oligocone trichromacy

description: Oligocone trichromacy is a rare non-progressive form of cone photoreceptor dysfunction characterized by reduced visual acuity, normal retinal appearance, absent or reduced cone responses on electroretinography but normal color vision.


Oguchi disease

description: Oguchi disease is an autosomal recessive retinal disorder characterized by congenital stationary night blindness and the Mizuo-Nakamura phenomenon.


name: brain malformation-congenital heart disease-postaxial polydactyly syndrome

description: Goossens-Devriendt syndrome is characterized by intrauterine growth retardation, a congenital heart defect, postaxial polydactyly, a brain malformation, abnormal hair with temporal balding, and marked facial dysmorphism. It has been reported in two siblings from unrelated parents. One of the siblings died and the surviving patient showed postnatal growth retardation and severe developmental delay.


androgen insensitivity syndrome

description: Androgen insensitivity syndrome (AIS) is a disorder of sex development (DSD) characterized by the presence of female external genitalia, ambiguous genitalia or variable defects in virilization in a 46,XY individual with absent or partial responsiveness to age-appropriate levels of androgens. It comprises two clinical subgroups: complete AIS (CAIS) and partial AIS (PAIS).


Leydig cell hypoplasia

description: A condition in males that affects sexual development. It is characterized by underdevelopment of the Leydig cells, which are cells in the testes that secrete male sex hormones (androgens) and are important for male sexual development. Individuals with LCH have a typical male genetic make-up (46, XY), but due to lowered levels of androgens, may have a range of genital (reproductive organ) differences. Individuals with LCH may have a small penis (micropenis),the opening of the urethra may be located on the underside of the penis (hypospadias), or the scrotum may be divided into two halves (bifid scrotum). Given these differences in development, the external genitalia may not appear clearly male or female (ambiguous genitalia). Some individuals with LCH can have female external genitalia and small testes that have not descended and are located in the pelvis, abdomen, or groin. This may be referred to as type 1, whereas less severe cases might be called type 2. LCH is inherited in an autosomal recessive manner and is caused by mutations in the LHCGR gene.Although there is no specific treatment or cure for LCH, there may be ways to manage the symptoms. A team of doctors or specialists is often needed to figure out the treatment options for each person.


angioosteohypotrophic syndrome

description: Angioosteohypotrophic syndrome is a rare, congenital, vascular anomaly syndrome characterized by venous or, on occasion, arterial malformations which lead to soft tissue hypertrophy and bone hypoplasia. Affected limb is generally shortened, highly deformed, painful and edematous and associates bone and muscle hypotrophy. Single parts, or multiple small parts, of limbs are typically affected but more extensive involvement, including complete extremity, shoulder girdle and axilla, has been reported.


name: myelodysplastic syndrome with ring sideroblasts

description: Acquired idiopathic sideroblastic anemia is one of a group of disorders known as the myelodysplastic syndromes (MDS) characterized by ineffective haemopoiesis affecting one or more blood cell lineages (myeloid, erythroid or megakaryocytic) leading to peripheral blood cytopenias and an increased risk of developing leukemia. Acquired idiopathic sideroblastic anemia is now more commonly referred to as refractory anemia with ringed sideroblasts or the acronym RARS.


tropical endomyocardial fibrosis

description: Tropical endomyocardial fibrosis is a restrictive cardiopathy, occurring almost exclusively in children and young adults in tropical and subtropical regions, characterized by endocardial fibrosis, affecting the apices and the inflow tract of the right or left ventricle (or both) and manifesting with a restrictive cardimyopathy and atrioventricular regurgitation leading to severe pulmonary hypertension, very high systemic venous pressure and congestive cardiac failure. Suspected etiologies include helminth and protozoal infestation and malnutrition.


Loeffler endocarditis

description: Loeffler's endocarditis is a rare restrictive cardiomyopathy characterized by hypereosinophilia and fibrous thickening of the endocardium, with usually large thrombi against the ventricle walls, that can lead to cardiovascular complications such as heart failure and thromboembolism. It manifests with symptoms like edema, fatigue and shortness of breath. It is usually secondary to eosinophil-associated tissue damage and is associated with idiopathic hypereosinophilic syndrome, chronic eosinophilic leukemia, carcinoma, or lymphoma.


primary progressive freezing gait

description: Primary progressive freezing gait is a rare, heterogeneous, progressively incapacitating neurodegenerative disease characterized by freezing of gait (usually during the first 3 years), later associating postural instability, eventually resulting in a wheelchair-bound state. Other features may include mild bradykinesia, rigidity, postural tremor, hyperreflexia, speech disorder and dementia. The disease is unresponsive to dopaminergic treatments.


pseudohypoaldosteronism type 1

description: Pseudohypoaldosteronism type 1 (PHA1) is a primary form of mineralocorticoid resistance presenting in the newborn with renal salt wasting, failure to thrive and dehydration.


pseudohypoaldosteronism type 2

description: A rare inherited form of hypertension characterized by hyperkalemia, hyperchloremic metabolic acidosis, normal or elevated aldosterone, low renin, and normal renal function.


6q terminal deletion syndrome

description: 6q terminal deletion syndrome is marked by a characteristic facial dysmorphism, short neck and psychomotor retardation, generally associated with a range of non-specific malformations.


central precocious puberty

description: Central precocious puberty (CPP), also referred to as gonadotropin dependent precocious puberty, is an endocrine-related developmental disease characterized by the onset of pubertal changes, with development of secondary sexual characteristics and accelerated growth and bone maturation, before the normal age of puberty (8 years in girls and 9 years in boys).


immunoglobulin A vasculitis

description: A systemic IgA vasculitis that affects small vessels. It is characterized by skin purpura, arthritis, and abdominal and/or renal involvement.


pyomyositis

description: Pyomyositis (PM) is a rare primary bacterial infection of the skeletal muscle, usually resulting from hematogenous spread or due to muscle injury, and characterized by pain and tenderness in the affected muscle, fever and abscess formation.


pyruvate dehydrogenase deficiency

description: Pyruvate dehydrogenase deficiency (PDHD) is a rare neurometabolic disorder characterized by a wide range of clinical signs with metabolic and neurological components of varying severity. Manifestations range from often fatal, severe, neonatal lactic acidosis to later-onset neurological disorders. Six subtypes related to the affected subunit of the PDH complex have been recognized with significant clinical overlap: PDHD due to E1-alpha, E1-beta, E2 and E3 deficiency, PDHD due to E3-binding protein deficiency, and PDH phosphatase deficiency.


polyarteritis nodosa

description: Polyarteritis nodosa (PAN) is a rare, clinically heterogeneous, rheumatologic disease characterized by necrotizing inflammatory lesions affecting small- and medium-sized blood vessels. PAN most commonly affects skin, joints, peripheral nerves, the gut, and the kidney.


familial long QT syndrome

description: A hereditary cardiac disease characterized by a prolongation of the QT interval at basal ECG and by a high risk of life-threatening arrhythmias.


aniridia

description: Aniridia is a congenital ocular malformation characterized by the complete or partial absence of the iris. It can be isolated or part of a syndrome (isolated and syndromic aniridia).


rabies

description: Rabies is a viral zoonosis leading to a fatal encephalopathy if not treated.


primary lymphedema

description: A congenital condition that results in swelling in the arms or legs, and can occur during adolescence or adulthood. Loss of motion and pain may also accompany the swelling. Protein-rich lymphatic fluid accumulates in tissues, engorging and enlarging vessels and often causing visible swelling, tenderness, and pain. Left untreated, the affected tissues may continue to swell, and can become hardened or fibrotic and susceptible to infection.


odontoleukodystrophy

description: Leukodystrophy with oligodontia is characterized by progressive ataxia beginning during infancy, a pyramidal syndrome and dental agenesis. The syndrome has been described in four children born to consanguineous parents. The mode of transmission is autosomal recessive.


name: auricular abnormalities-cleft lip with or without cleft palate-ocular abnormalities syndrome

description: The association of auricular abnormalities and cleft lip with or without cleft palate has been described in two siblings. One sibling had postauricular pits, profound myopia, nystagmus and retinal pigment abnormalities. The second sibling was a fetus (gestational age: 23 weeks) with severe cleft lip, cleft palate and external ear abnormalities.


monosomy 9q22.3

description: Interstitial 9q22.3 microdeletion is associated with a phenotype including macrocephaly, overgrowth and trigonocephaly. Psychomotor delay, hyperactivity and distinctive facial features were also observed. It has been described in two unrelated children.


hereditary hemorrhagic telangiectasia

description: A disorder of angiogenesis leading to arteriovenous dilatations: cutaneo-mucosal hemorrhagic telangiectasias and visceral shunting.


name: non-syndromic X-linked intellectual disability

description: Nonspecific X-linked intellectual deficiencies (MRX) belong to the family of sex-linked intellectual deficiencies (XLMR). In contrast to syndromic or specific X-linked intellectual deficiencies (MRXS), which also present with associated physical, neurological and/or psychiatric manifestations, intellectual deficiency is the only symptom of MRX.


inherited obesity

description: Abnormally low body weight.


Q fever

description: A bacterial infection caused by Coxiella burnetii. It is transmitted to humans by the inhalation of infected air particles or contact with fluids and feces of infected animals. Signs and symptoms include the abrupt onset of fever, headache, myalgias, and weakness.


Axenfeld-Rieger syndrome

description: Axenfeld-Rieger syndrome (ARS) is a generic term used to designate overlapping genetic disorders, in which the major physical condition is anterior segment dysgenesis of the eye. Patients with ARS may also present with multiple variable congenital anomalies.


Rubinstein-Taybi syndrome

description: A rare malformation syndrome characterized by congenital anomalies (microcephaly, specific facial characteristics, broad thumbs and halluces and postnatal growth retardation), short stature, intellectual disability and behavioral characteristics.


name: inborn disorder of amino acid and other organic acid metabolism


juvenile polyposis of infancy

description: Juvenile polyposis of infancy (JPI) is the most severe form of juvenile gastrointestinal polyposis and is characterized by pancolonic hamartomatous polyposis from stomach to rectum, diagnosed in the first two years of life.


name: IgG4-related dacryoadenitis and sialadenitis

description: IgG4-related dacryoadenitis and sialoadenitis (Mikulicz disease) is an IgG4-related sclerosing disease characterized by persistent, usually painless, bilateral enlargement of the lacrimal, parotid, and submandibular glands associated with elevated levels of serum immunoglobulin (Ig) G4 and with lymphocyte and IgG4-positive plasmacyte infiltration. It predominantly causes mouth and eye dryness but can also affect other organs such as the lungs, liver, and kidneys, and be accompanied by complications such as autoimmune pancreatitis (AIP), retroperitoneal fibrosis, and tubulointerstitial nephritis.


name: AKT2-related familial partial lipodystrophy


acquired generalized lipodystrophy

description: Acquired generalized lipodystrophy belongs to a group of lipodystrophic syndromes characterized by loss of adipose tissue, and is a syndrome of insulin resistance that leads to increased cardiovascular risk. Acquired generalized lipodystrophy is related to a selective loss of subcutaneous adipose tissue occurring exclusively at the extremities (face, legs, arms, palms and sometimes soles).


localized lipodystrophy

description: Localised lipodystrophies are characterized by loss of subcutaneous tissue from small regions of the body.


name: hereditary inclusion body myopathy-joint contractures-ophthalmoplegia syndrome

description: Hereditary inclusion body myopathy type 3 is characterized by congenital joint contractures (normalizing during early childhood), external ophthalmoplegia, and proximal muscle weakness. In adult cases, the muscular weakness is progressive.


Foix-Alajouanine syndrome

description: Foix-Alajouanine syndrome, also called subacute ascending necrotising myelitis, results from chronic congestion of the extrinsic pial veins of the spinal cord and of the intrinsic subpial network. It is characterized by progressive ascending deficit over a period of several months or years.


folinic acid-responsive seizures

description: Folinic acid-responsive seizures is a very rare neonatal epileptic encephalopathy disorder characterized clinically by myoclonic and clonic, or clonic seizures associated with apnea occurring several hours to 5 days after birth and responding to folinic acid.


sympathetic ophthalmia

description: Sympathetic ophthalmia (SO) is a bilateral granulomatous anterior uveitis usually occurring within the three months following trauma or a surgical procedure involving one eye.


name: interstitial granulomatous dermatitis with arthritis

description: Interstitial granulomatous dermatitis with arthritis is a rare rheumatologic disease characterized by the occurrence of inflammatory arthritis in association with large, erythematous, symmetrical cutaneous lesions (ranging from typical, but infrequent, cord-like lesions on the flanks to more common violaceous plaques on the trunk and limbs) featuring a typical histologic infiltrate mainly constituted of histiocytes.


retinitis pigmentosa

description: Retinitis pigmentosa (RP) is an inherited retinal dystrophy leading to progressive loss of the photoreceptors and retinal pigment epithelium and resulting in blindness usually after several decades.


thyrotoxic periodic paralysis

description: Thyrotoxic periodic paralysis (TPP) is a rare neurological disease characterized by recurrent episodes of paralysis and hypokalemia during a thyrotoxic state.


myxofibrosarcoma

description: A malignant fibroblastic neoplasm arising from the soft tissue. It is characterized by the presence of spindle-shaped cells, cellular pleomorphism, thin-walled blood vessels, fibrous septa, and myxoid stroma.


acute interstitial pneumonia

description: Acute interstitial pneumonia (AIP), also referred to as Hamman-Rich syndrome, is a rapidly progressive and histologically distinct form of idiopathic interstitial pneumonia.


name: respiratory bronchiolitis-interstitial lung disease syndrome

description: Respiratory bronchiolitis - interstitial lung disease is a mild inflammatory pulmonary disorder developed by cigarette smokers and characterized by shortness of breath and cough, pulmonary function abnormalities of mixed restrictive and obstructive lung disease and high resolution CT scanning showing centrilobular micronodules, ground glass opacities and peribronchiolar thickening.


description: The association of amelogenesis imperfecta and a microscopically typical hair dysplasia has been found in several members of a family in two generations. Transmission is X-linked.


DEND syndrome

description: DEND syndrome is a very rare, generally severe form of neonatal diabetes mellitus (NDM) characterized by a triad of developmental delay, epilepsy, and neonatal diabetes.


Bickerstaff brainstem encephalitis

description: Bickerstaff's brainstem encephalitis (BBE) is a rare post-infectious neurological disease characterized by the association of external ophthalmoplegia, ataxia, lower limb arreflexia, extensor plantar response and disturbance of consciousness (drowsiness, stupor or coma).


Japanese encephalitis

description: A disease due to a virus transmitted by an arthropod).


cutaneous neuroendocrine carcinoma

description: Cutaneous neuroendocrine carcinoma is a primary cutaneous cancer arising from a subset of skin neuroendocrine cells (Merkel cells, giving the name Merkel cell carcinoma (MCC)).


isolated congenital anonychia

description: Isolated congenital anonychia is characterized by nail abnormalities ranging from onychodystrophy (dystrophic nails) to anonychia (absence of nails). Onychodystrophy-anonychia has been described in at least four generations of a family with male-to-male transmission, suggesting autosomal dominant transmission. Anonychia has been described in approximately less than 20 cases; it is likely to be transmitted as an autosomal recessive trait. Total anonychia congenita, in which all the fingernails and toenails are absent, may have an autosomal dominant inheritance pattern.


name: disseminated superficial actinic porokeratosis

description: Disseminated superficial actinic porokeratosis (DSAP) is the most common form of porokeratosis characterized by the presence of several small annular plaques with a distinctive keratotic rim found most commonly on sun-exposed areas of the skin, particularly the extremities.


inborn carbohydrate metabolic disorder

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


inborn disorder of bile acid synthesis

description: Anomalies of bile acid synthesis are a group of sterol metabolism disorders due to enzyme deficiencies of bile acid synthesis (BAS) in infants, children and adults, with variable manifestations that include cholestasis, neurological disease, and fat malabsorption. Nine inborn errors have been described, 7 of which lead to liver cholestasis.


name: inborn disorder of neurotransmitter metabolism and transport


name: inborn disorder of cobalamin metabolism and transport


name: inborn disorder of methionine cycle and sulfur amino acid metabolism

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


name: disorder of fatty acid and ketone body metabolism


disorder of gluconeogenesis

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


glucose transport disorder

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


inborn disorder of histidine metabolism

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


inborn disorder of ketolysis

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


name: inborn disorder of ornithine or proline metabolism


name: inborn disorder of pentose phosphate metabolism


peroxisome biogenesis disorder

description: Peroxisome biogenesis disorders, Zellweger syndrome spectrum (PBD-ZSS) is a group of autosomal recessive disorders affecting the formation of functional peroxisomes, characterized by sensorineural hearing loss, pigmentary retinal degeneration, multiple organ dysfunction and psychomotor impairment, and is comprised of the phenotypic variants Zellweger syndrome (ZS), neonatal adrenoleukodystrophy (NALD) and infantile Refsum disease (IRD).


name: inborn disorder of phenylalanine and tyrosine metabolism


inborn disorder of purine metabolism

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


name: inborn disorder of pyridoxine metabolism

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


name: inborn disorder of pyrimidine metabolism

description: ANPM


name: inborn disorder of serine family metabolism

description: An inherited metabolic disease that is has its basis in the disruption of serine family amino acid metabolic process.


sterol biosynthesis disorder

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


name: inborn disorder of the gamma-glutamyl cycle


name: inborn disorder of branched-chain amino acid metabolism

description: An inherited metabolic disease that is has its basis in the disruption of branched-chain amino acid metabolic process.


inborn disorder of energy metabolism

description: An inherited metabolic disease that is has its basis in the disruption of generation of precursor metabolites and energy.


lysosomal lipid storage disorder

description: An inherited metabolic disorder in which harmful amounts of lipids accumulate in cells and tissues. Because of a functionally impaired hydrolase or auxiliary protein, their lipid substrates cannot be degraded, accumulate in the lysosome, and slowly spread to other intracellular membranes.


name: inborn disorder of lysosomal amino acid transport


mucolipidosis

description: A group of inherited lysosomal storage diseases characterized by accumulation of lipids and carbohydrates in the tissues, resulting in mental disabilities and skeletal malformations.


mucopolysaccharidosis

description: A group of autosomal recessive or X-linked inherited lysosomal storage disorders affecting the metabolism of mucopolysaccharides, resulting in the accumulation of mucopolysaccharides in the body. Signs and symptoms include organomegaly, mental retardation, abnormal skeletal development, heart disorders, hearing loss, and central nervous system deficiencies.


name: inborn disorder of biogenic amine metabolism and transport


name: metabolic disease involving other neurotransmitter deficiency


name: inborn disorder of purine or pyrimidine metabolism


sphingolipidosis

description: An inherited metabolic disorder that affects the lysosomal degradation of the spinhgolipids. Representative examples include Gaucher disease, Tay-Sachs disease, and Niemann-Pick disease.


sterol metabolism disorder

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


hemochromatosis type 2

description: Hemochromatosis type 2 (juvenile) is the early-onset and most severe form of rare hereditary hemochromatosis (HH), a group of diseases characterized by excessive tissue iron deposition of genetic origin.


mild phenylketonuria

description: Mild phenylketonuria is a rare form of phenylketouria (PKU), an inborn error of amino acid metabolism, characterized by symptoms of PKU of mild to moderate severity.


classic phenylketonuria

description: Classical phenylketonuria is a severe form of phenylketonuria (PKU) an inborn error of amino acid metabolism characterized in untreated patients by severe intellectual deficit and neuropsychiatric complications.


adult neuronal ceroid lipofuscinosis

description: A genetically heterogeneous group of neuronal ceroid lipofuscinoses (NCLs) with onset during the third decade of life, characterized by dementia, seizures and loss of motor capacities, and sometimes associated with visual loss caused by retinal degeneration.


name: infantile neuronal ceroid lipofuscinosis

description: A form of neuronal ceroid lipofuscinosis (NCL) characterized by onset during the second half of the first year of life and rapid mental and motor deterioration leading to loss of all psychomotor abilities.


juvenile neuronal ceroid lipofuscinosis

description: A genetically heterogeneous group of neuronal ceroid lipofuscinoses (NCLs) typically characterized by onset at early school age with vision loss due to retinopathy, seizures and the decline of mental and motor capacities.


autosomal erythropoietic protoporphyria

description: Erythropoietic protoporphyria (EPP) is an inherited disorder of the heme metabolic pathway characterized by accumulation of protoporphyrin in blood, erythrocytes and tissues, and cutaneous manifestations of photosensitivity.


name: alpha-N-acetylgalactosaminidase deficiency type 3

description: Alpha-N-acetylgalactosaminidase (NAGA) deficiency type 3 is a rare clinically heterogeneous type of NAGA deficiency with developmental, neurologic and psychiatric manifestations presenting at an intermediate age.


description: Diazoxide-resistant focal hyperinsulism (DRFH) is a form of diazoxide-resistant hyperinsulinism characterized by recurrent episodes of profound hypoglycemia caused by an excessive/ uncontrolled insulin secretion (inappropriate for the level of glycemia) due to a focal adenomatous hyperplasia of pancreas, that is unresponsive to medical treatment with diazoxide, necessitating complete excision of the focal lesion.


SAPHO syndrome

description: SAPHO syndrome (acronym for Synovitis, Acne, Pustulosis, Hyperostosis and Osteitis) is an auto-inflammatory disease, mainly characterized by the association of neutrophilic cutaneous involvement and chronic osteomyelitis.


name: vitamin B12-unresponsive methylmalonic acidemia type mut-

description: Vitamin B12-unresponsive methylmalonic acidemia type mut- is an inborn error of metabolism characterized by recurrent ketoacidotic comas or transient vomiting, dehydration, hypotonia and intellectual deficit, which does not respond to administration of vitamin B12.


epidermal disease

description: A skin disease that involves the epidermis.


ichthyosis

description: Disorders of cornification that are characterized by visible scaling and/or hyperkeratosis of most or all of the skin. Inherited ichthyoses, defined as the generalized form of Mendelian disorders of cornification, affect most or all of the skin. This etiologically and phenotypically heterogenous group of conditions is caused by mutations in various different genes important for keratinocyte differentiation and epidermal barrier function. Acquired forms of ichthyosis can be observed with certain autoimmune, inflammatory, metabolic, endocrine, or infectious diseases or with malignancies.


erythrokeratoderma

description: An umbrella term for a group of rare genetic skin disorders characterized by well-demarcated plaques of reddened, dry and thickened skin. Typically, these lesions are distributed symmetrically on the body and tend to slowly expand and progress over time.


hereditary palmoplantar keratoderma

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


inherited epidermolysis bullosa

description: Inherited epidermolysis bullosa (EB) encompasses a number of disorders characterized by recurrent blister formation as the result of structural fragility within the skin and selected other tissues.


hypertrichosis

description: Excessive hair growth anywhere on the body.


nail anomaly

description: A epidermal appendage anomaly that involves the nail.