- 1. Difficulty in performing voluntary movements. The term dyskinesia is commonly used in relation to Parkinson's disease and other so-called extrapyramidal disorders. The word dyskinesia (dis-ki-ne´ze-a) is logically derived from two Greek roots: dys-, trouble + kinesis, movement = trouble moving.
2. The presence of involuntary movements, such as the choreaform movements seen in some cases of rheumatic fever or the characteristic movements of tardive dyskinesia. Some forms of dyskinesia are a side effect of using certain medications, particularly L-Dopa and, in the case of tardive dyskinesia, the anti-psychotics.
* * *Difficulty in performing voluntary movements. Term usually used in relation to various extrapyramidal disorders. SYN: dyscinesia. [dys- + G. kinesis, movement]- extrapyramidal dyskinesias abnormal involuntary movements attributed to pathologic states of one or more parts of the striate body and characterized by insuppressible, stereotyped, automatic movements that cease only during sleep; e.g., Parkinson disease; chorea; athetosis; hemiballism.- tardive d. involuntary movements of the facial muscles and tongue, often persistent, that develop as a late complication of some neuroleptic therapy, more likely with typical antipsychotics. SYN: lingual-facial-buccal d..
* * *dys·ki·ne·sia .dis-kə-'nē-zh(ē-)ə, -kī- n impairment of voluntary movements resulting in fragmented or jerky motions (as in Parkinson's disease) see TARDIVE DYSKINESIAdys·ki·net·ic -'net-ik adj
* * *n.a group of involuntary movements that appear to be a fragmentation of the normal smoothly controlled limb and facial movements. They include chorea, dystonia, and those involuntary movements occurring as side-effects to the use of levodopa and the phenothiazines (see tardive dyskinesia).
* * *dys·ki·ne·sia (dis″kĭ-neґzhə) [Gr. dyskinēsia difficulty of moving] distortion or impairment of voluntary movement, as in tic, spasm, or myoclonus. dyskinetic adj
Medical dictionary. 2011.