Tourette Syndrome Definition & Overview

Definition

Tourette syndrome (TS) is a chronic, neurological disorder that is a member of a larger group of primary tic disorders. It is characterized by motor and vocal tics. Both motor and vocal tics must be present, though not necessarily at the same time. Tics must be present for more than one year, and its onset must be prior to age 18. Tics are rapid, involuntary movements or sounds that occur repeatedly.

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