1. An abnormally intense motor activity, often associated with agitation.
2. Certain recurring or continuous involuntary movements seen in disease of the central nervous system; such as, chorea (ceaseless rapid complex body movements that look well coordinated and purposeful but are, in fact, involuntary) and athetosis (repetitive involuntary, slow, sinuous, writhing movements; or twisting, snake-like, or worm-like movements).