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violent motor restlessness of half of the body, most marked in the upper limbs.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
Ballism involving one side of the body.
[hemi- + G. ballismos, jumping about]
Farlex Partner Medical Dictionary © Farlex 2012
hemiballismNeurology A hyperkinetic movement disorder characterized by violent flailing movements of the arm and leg contralateral to a lesion–hemorrhage or infarction, or rarely tumor of the subthalamic nucleus; hemiballism follows recovery from a stroke-induced hemiparesis and hemisensory defect Clinical Motor Sx may have a rotatory component in the shoulder or hip, accompanied by choreiform movements–repeated flexion and extension of hands and feet; movements usually disappear during sleep Management Neuroleptics–eg, chlorpromazine, haloperidol, reserpine, antipsychotics, or other agents that interfere with dopamine transmission–eg, reserpine
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.