Sleep Paralysis

Sleep paralysis is paralysis associated with sleep that may occur in healthy persons or may be associated with narcolepsy, cataplexy, and hypnagogic hallucinations. The pathophysiology of this condition is closely related to the normal hypotonia that occurs during REM sleep. When considered to be a disease, isolated sleep paralysis is classified as MeSH D020188. Some evidence suggests that it can also, in some cases, be a symptom of migraine.

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