REM sleep behaviour disorder in a child with Tourette's syndrome

PURPOSE: To describe an association of Tourette's syndrome with rapid eye movement sleep behaviour disorder (RBD) in a prepubescent boy. METHODS: A four year longitudinal single-case study. RESULTS: The co-existence of Tourette's syndrome and RBD was confirmed after polysomnographic studies using the standard criteria. The authors propose possible overlap in the pathophysiological mechanisms underlying the two disorders.