Coincident infantile autism and Tourette syndrome: a case report.

A 15-year-old boy who had been diagnosed as having infantile autism (IA) at two years of age was found to have Tourette Syndrome (TS) in adolescence. This case report represents the second coincident finding of IA and TS in an adolescent autistic boy. The implications of a co-occurrence of IA and TS are discussed in the light of our current understanding of abnormalities in neurotransmitter metabolism common to both conditions.