Tic-tac-toe doesn’t have much of a rep. Sure, it’s a simple, brief distraction from the monotony of existence, but once your 8-year-old self realizes that you can always force a draw, it loses its ...

Tourette syndrome (TS) is a neurological disorder. Tourette syndrome causes unwanted repetitive movements or sounds called tics. TS is more common in males than females. Simple tics are sudden, brief ...

Tics are classified as either simple or complex. Simple motor tics are sudden, brief, repetitive movements that involve a limited number of muscle groups. Some of the more common simple tics include ...