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When does sleep paralysis usually happen?

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Sleep paralysis usually occurs at one of two times:

  • If it occurs while you are falling asleep, it's called hypnagogic, or predormital, sleep paralysis.
  • If it happens as you are waking up, it's called hypnopompic, or postdormital, sleep paralysis.

From: Sleep Paralysis WebMD Medical Reference

SOURCES:

American Academy of Sleep Medicine: "Sleep Paralysis."

National Sleep Foundation: "Ask the Sleep Expert: Sleep & Parasomnias;" "Sleep Paralysis;" "Topics A to ZZZZs: Narcolepsy;" and "What Happens When You Sleep?"

Reviewed by Sabrina Felson on October 26, 2018

SOURCES:

American Academy of Sleep Medicine: "Sleep Paralysis."

National Sleep Foundation: "Ask the Sleep Expert: Sleep & Parasomnias;" "Sleep Paralysis;" "Topics A to ZZZZs: Narcolepsy;" and "What Happens When You Sleep?"

Reviewed by Sabrina Felson on October 26, 2018

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What happens when hypnagogic sleep paralysis develops?

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