Tourette syndrome (TS) is a neurologic condition that usually begins in childhood. Persons with TS have repetitive movements called tics. Often, symptoms of Attention Deficit Hyperactivity Disorder (ADHD), or anxiety disorders, such as Obsessive Compulsive Disorder (OCD), are present.
All of these symptoms may be due to abnormal function of deep structures in the brain called "the basal ganglia." The cause of TS is unknown.