label: Aromatic L-Amino-Acid Decarboxylase Deficiency
label_lc: aromatic l-amino-acid decarboxylase deficiency
description: "An autosomal recessive condition caused by mutation(s) in the DDC gene, encoding aromatic-L-amino-acid decarboxylase. It is characterized by combined serotonin and catecholamine deficiency, resulting in severe neurologic dysfunction usually beginning in infancy or childhood."