What is a motor tic?
Motor tics are involuntary movements of any muscle, ranging from sudden, rapid, jerking motions, to slower stretching movements. Examples include rapid eyeblinking, mouth opening, facial grimacing, horizontal head movements (hair out of eyes tic), shoulder shrugging, crotch touching, rapid extension of the arms or legs. They include other behaviors such as tugging at clothing, licking lips, sticking the tongue out, eyes glancing up, widening eyes, and stretching movements. They often tend to be repetitious and ritualistic.
