tardive dyskinesia

noun Pathology.
a disorder characterized by restlessness and involuntary rolling of the tongue or twitching of the face, trunk, or limbs, usually occurring as a complication of long-term therapy with antipsychotic drugs.

Origin:
1965–70

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American Heritage
Medical Dictionary

tardive dyskinesia n.
A chronic disorder of the nervous system characterized by involuntary jerky movements of the face, tongue, jaws, trunk, and limbs, usually developing as a late side effect of prolonged treatment with antipsychotic drugs. Also called tardive oral dyskinesia.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Tardive dyskinesia is a disorder that involves involuntary movements, especially of the lower face.
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