Tourette syndrome or Tourette's syndrome (abbreviated as TS or Tourette's) is a common neurodevelopmental disorder that begins in childhood or adolescence. It is characterized by multiple movement (motor) tics and at least one vocal (phonic) tic. Common tics are blinking, coughing, throat clearing, sniffing, and facial movements. These are typically preceded by an unwanted urge or sensation in the affected muscles known as a premonitory urge, can sometimes be suppressed temporarily, and characteristically change in location, strength, and frequency. Tourette's is at the more severe end of a spectrum of tic disorders. The tics often go unnoticed by casual observers.
- TS (Tourette's Syndrome) has really taught me a lesson about judging people who are different. Now when I see somebody do or say something I don't understand, I try to look beyond appearances and ask myself what makes that person tick — no pun intended. Think about it: When you keep an open mind about things that seem unusual or strange, all sorts of new understanding come to you. The world gets bigger, and so do you.
- Neve Campbell Celebrity Diary, Teen People Magazine, April 2000