any one of a group of disorders characterized by the occurrence many times a day of motor tics, vocal tics, or both that is not due to a general medical condition or the effects of a medication.

a tic disorder characterized by many motor tics and one or more vocal tics, such as grunts, yelps, barks, sniffs, or (rarely) coprolalia. 

n. a disorder characterized by the persistent pulling of hair from any part of one’s body on which it grows, often with conspicuous hair loss.