Monarch Disease Ontology id MONDO_0012084 (aromatic L-amino acid decarboxylase deficiency) is a very rare, severe, genetic neurometabolic disorder associated with clinical manifestations related to underproduction of serotonin and dopamine, mainly hypotonia, hypokinesia, ptosis oculogyric crises, and signs of autonomic dysfunction. Also known as: AADC deficiency, aromatic L-amino-acid decarboxylase deficiency.