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Sleep Paralysis

(cataplexy of awakening, delayed psychomotor awakening, nocturnal hemiplegia, nocturnal paralysis, post-dormital chalastic fit, sleep numbness)

Immobility of the body that occurs in the transition from sleep to wakefulness that is a partial manifestation of REM sleep.


Definition reprinted with permission from Culebras, Antonio, Clinical Handbook of Sleep Disorders, Butterworth-Heinemann