Somnambulism in children with Tourette syndrome.

A total of 171 children, 57 with Tourette syndrome, 57 with learning disabilities and the rest with seizure disorders, were studied to discover the incidence of somnambulism. Of the 13 identified sleepwalkers, 10 had Tourette syndrome. It is argued that this may be due to a disturbance in serotonin metabolism.