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Ballismus

From Biology-Online Dictionary | Biology-Online Dictionary
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Ballismus

a type of involuntary movement affecting the proximal limb musculature, manifested as jerking, flinging movements of the extremity; caused by a lesion of or near the contralateral subthalamic nucleus. Usually only one side of the body is involved, resulting in hemiballismus.

Synonym: ballism.

Origin: g. Ballismos, a jumping about