Paroxysmal dyskinesias (PD) are episodic movement disorders in which abnormal movements are present only during attacks. The term paroxysmal indicates that symptoms are noticeable only at certain times. The term dyskinesia broadly refers to movements of the body that are involuntary. Between attacks most people are generally neurologically normal, and there is no loss of consciousness during the attacks.

 

The full text can be found at http://dystonia-foundation.org/what-is-dystonia/forms-of-dystonia/paroxysmal-dyskinesias/more-on-paroxysmal-dyskinesias.

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