Background: Sydenham’s chorea is associated with dysfunction of fronto-striatal circuits induced by crossreactive antibodies to group A b-hemolytic streptococcus. High susceptibility of extrapyramidal effects of neuroleptics in patients with Sydenham’s chorea suggests underlying nigro-striatal dysfunction. Objective: To study the presence of parkinsonism in patients with a history of Sydenham’s Chorea. Methods:...