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biological

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Nocturnal Paroxysmal Dystonia

Nocturnal Paroxysmal Dystonia Nocturnal paroxysmal dystonia is a parasomnia marked by sudden episodes during non-REM sleep in which a person shows abnormal movements such as twisting, flinging, or writhing, sometimes with partly purposeful-looking activity.

Nocturnal paroxysmal dystonia is a parasomnia marked by sudden episodes during non-REM sleep in which a person shows abnormal movements such as twisting, flinging, or writhing, sometimes with partly purposeful-looking activity. These episodes usually happen repeatedly over the course of a night.