Biotin-thiamine-responsive basal ganglia disease

A rare genetic neurological disorder characterized by subacute encephalopathy with confusion, seizures, and movement disorder, often following a history of febrile illness. Imaging may reveal bilateral lesions in the basal ganglia. The disease usually becomes symptomatic in childhood and is life-threatening if left untreated, but symptoms can be reversed and progression prevented by treatment with high doses of biotin and thiamine.