<unk>  is abnormal writhing movements, usually of the fingers, caused by a failure of joint position sense (proprioception) and indicates disruption of the proprioceptive pathway, from nerve to parietal cortex.
Pseudoathetosis
Choreoathetosis
Paroxysmal kinesigenic choreoathetosis
Paroxysmal dyskinesia
Chorea 
Chorea
Synkinesis
Athetosis