Co-Morbidity of Attention Deficit Hyperactivity Disorder (ADHD) and Tourette Syndrome in Child Referral Psychiatry Clinic in IRAN

Introduction Tourette disorder is a chronic, potentially disabling, neuropsychiatric disorder of childhood (1). Its symptoms are involuntary multiple motor and phonic tics, not necessarily concurrent (2). Tics show waxing and waning patterns in childhood, (23) with a tendency of decline in late childhood (3). The prevalence of Tourette disorder is ranging from 3–5 per 10,000 (3-4), it is estimated that milder cases were not counted (5). The co-morbidity of Tourette disorder was widely discussed (3-4). Attention–Deficit Hyperactivity Disorder is more than any other mental disorders co morbid with Tourette (6-7). Data from clinical studies indicate that ADHD symptoms occur in half or all of Tourette patients. In some studies Tourette diagnosis, has been diagnosed after ADHD (8).