Involuntary wide-ranging, flinging movements of entire limb(s). Seen after damage to the subthalamic nucleus. The abnormal movements occur on the side opposite the damaged subthalamic nucleus.
Hyperkinetic movement disorder characterized by violent flinging motions in the arm contralateral to a lesion in or near the subthalamic nucleus. May be due to damage in basal ganglia.
Hemiballismus is a neurological sign, a movement disorder, characterised by unilateral wild, large amplitude flinging movements of the arm and leg, normally causing falls and preventing postural maintenance.