Movement disorder?: Depends upon pattern of twitching. For example, Gilles de la Tourette may cause sudden tic like motions, and myoclonus could be violent sudden jerk. Localized twitches called myokymia can affect eyelids and face. May be secondary to brain and brainstem irritation, but might also be local secondary to muscle activity, fasciculations.
Answered 7/8/2014
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