Paroxysmal dyskinesias are a relatively rare subset of hyperkinetic movement disorders that are defined by their episodic nature. They may be categorized into paroxysmal kinesigenic dyskinesia, paroxysmal nonkinesigenic dyskinesia, and paroxysmal exertion-induced dyskinesia. Paroxysmal dyskinesias may be sporadic, genetic, or caused by metabolic or structural etiologies. Another common cause of paroxysmal dyskinesias is psychogenic movement disorders.
Feb. 15, 2021