Definitions for "Dyskinesias"
Abnormal neuromuscular conditions characterized by disorganized or excessive movement (also known as hyperkinesia). Forms of dyskinesia include sudden, brief, "shock-like" muscle contractions (myoclonus); involuntary, rhythmic, oscillatory movements of a body part (tremor); rapid involuntary jerky movements (chorea); relatively slow writhing motions (athetosis); or abrupt, purposeless, simple or complex muscle movements or vocalizations (motor or vocal tics).
pathologic invulontary movements sometimes present at rest but always increased by the attempt to perform a voluntary movement and by stress; thay are usually absent during sleep. According to their distribution and frequency, they may be defined as tremor, dystonia, chorea, atethosis or myoclonus. Dyskinesias result from a dysfunction of those brain structures implied in the control of movement. Myoclonic jerks experienced while falling asleep are a benign condition.
abnormal, involuntary movements of voluntary muscles (may involve face, neck, hands, arms, legs, etc.) including twitches, jerks, twisting, or writhing movements.