Sleep paralysis: causes and what to do

Sleep paralysis is a brief episode in which you become aware as you fall asleep or wake up but cannot move or speak. It can feel frightening and may include vivid dreamlike experiences. Episodes resolve spontaneously and are considered benign in the review of recurrent isolated sleep paralysis. The key is to recognize the pattern, address disrupted sleep, and ask a clinician about repeated episodes or other symptoms such as severe daytime sleepiness. Stefani and Tang, 2024

What is sleep paralysis?

Sleep paralysis occurs when REM sleep muscle atonia persists into waking awareness. You may be aware but unable to move or speak. Sharpless, 2016 describes episodes as often frightening and accompanied by vivid waking dreams or hallucinations. Episodes resolve spontaneously. Stefani and Tang, 2024

Some people also experience frightening hallucinations. A systematic review pooling 35 studies found that 7.6% of the general population reported at least one lifetime episode, with higher rates in student and psychiatric patient samples. Sharpless and Barber, 2011

Sleep paralysis causes and common triggers

An isolated episode does not necessarily point to a disorder. A review identifies irregular sleep-wake schedules, sleep deprivation, and jetlag as predisposing factors. A broader systematic review found associations with sleep problems and disruption, stress, anxiety symptoms, and other factors, while noting that causes remain unknown. Stefani and Tang, 2024 Denis et al., 2018

Sleep paralysis can occur independently of narcolepsy, and recurrent isolated sleep paralysis is a recognized sleep-wake disorder. A clinician can assess whether episodes fit that pattern or occur with another condition. Sharpless, 2016 Do not stop or change a prescription sleep or psychiatric medicine on your own; discuss concerns with the prescriber.

What you notice	What it may mean	A useful response
An episode around sleep onset or waking	Awareness and REM-related muscle atonia can overlap	Note timing and recent sleep disruption; return to a steady schedule
Repeated episodes with distress or fear of sleep	The pattern is affecting well-being and deserves discussion	Bring an episode and sleep log to a clinician
Strong daytime sleepiness or sudden sleep episodes	A separate sleep condition may need assessment	Arrange medical evaluation; avoid driving when drowsy
Loud snoring, breathing pauses, or gasping	Possible disrupted breathing during sleep	Tell a clinician, especially if you are tired during the day

Is sleep paralysis dangerous? Can it kill you?

Episodes of recurrent isolated sleep paralysis are described as benign and resolve spontaneously. The experience reflects REM-related muscle atonia persisting into waking awareness. Stefani and Tang, 2024 That description cannot explain every episode of weakness, chest discomfort, or difficulty breathing while awake.

Seek urgent medical help for ongoing chest pain, severe shortness of breath, fainting, or weakness that continues after you are fully awake. New or worsening symptoms deserve medical care. If someone has difficulty breathing or cannot be roused, treat that as an emergency rather than assuming sleep paralysis.

Arrange a timely medical appointment if episodes recur, cause substantial distress, lead you to avoid sleep, or occur with marked daytime sleepiness. Loud snoring with pauses in breathing or gasping also deserves evaluation. If you feel sleepy behind the wheel, do not drive and contact a clinician promptly. Fatigue together with chest pain or shortness of breath needs prompt medical attention. If low mood includes thoughts of self-harm, call or text the 988 Suicide & Crisis Lifeline in the United States; call emergency services for immediate danger.

What to do during an episode

Remind yourself, if you can, that the event is temporary. Episodes resolve spontaneously. Stefani and Tang, 2024 A clinician’s review notes that episodes can be frightening and accompanied by vivid waking dreams. Sharpless, 2016 A bed partner who knows what is happening can speak calmly or gently touch your shoulder if that is welcome.

Afterward, sit up when you feel fully alert, orient yourself to the room, and give yourself a moment before getting out of bed. Write down roughly when it happened and what your sleep was like. A short record is more useful at an appointment than trying to remember a string of episodes from memory.

Habits that may reduce episodes

Start with sleep regularity. Keeping sleep and wake times consistent and allowing enough time for sleep are practical steps that align with the review’s identification of irregular schedules and sleep deprivation as predisposing factors. Stefani and Tang, 2024 For broader routines, see sleep hygiene for men over 50 and how to improve sleep quality after 50.

The sleep paralysis review recommends informing patients about sleep hygiene. Stefani and Tang, 2024 Choose a calm bedtime routine that feels sustainable. If worry about another episode keeps you awake, note the concern and consider discussing it with a clinician. For persistent trouble falling asleep or staying asleep, see insomnia treatment without pills.

Keep a simple log of bed and wake times, episode dates, and daytime sleepiness. This may help you and a clinician discuss whether episodes coincide with irregular schedules, sleep deprivation, or travel, factors identified in a clinical review. Stefani and Tang, 2024 Avoid driving or operating equipment when sleepy.

What about supplements?

The PubMed reviews cited here discuss sleep paralysis and its clinical management, but do not evaluate a supplement for this concern. Talk to your doctor before using supplements, especially if you take medications. Our scores are strict and assess how well product labels match available evidence; a rating is not a promise of results. See the sleep and energy supplements comparison and our Magnesium Breakthrough review for label details.

Frequently asked questions

Is sleep paralysis real?

Yes. It is a recognized sleep-related experience in which awareness and REM sleep muscle atonia overlap. Sharpless, 2016

What does sleep paralysis feel like?

A person may be aware but unable to move or speak while falling asleep or waking. Episodes can be frightening and may include vivid waking dreams or hallucinations. Sharpless, 2016

Does sleep paralysis mean I have narcolepsy?

No. Sleep paralysis can occur independently of narcolepsy, though a clinician can assess recurrent episodes and other symptoms. Sharpless, 2016

Should I wake someone who is having an episode?

A calm voice or gentle touch may reassure them, if they have said that is helpful. Episodes of isolated sleep paralysis resolve spontaneously. Stefani and Tang, 2024 If the person remains unresponsive or has ongoing breathing difficulty, seek urgent help.

Can changing sleep position help?

The reviews cited here identify irregular schedules, sleep deprivation, jetlag, sleep disruption, and stress among associated factors, but do not establish sleep position as a cause. Track your episodes and discuss recurring or distressing events with a clinician. Stefani and Tang, 2024 Denis et al., 2018

Next step

If episodes are recurring, keep a brief sleep and symptom log and bring it to your doctor, especially if you also have daytime sleepiness or breathing interruptions. For practical ways to steady your routine, start with our guide to sleep hygiene for men over 50.

Results vary from person to person. Talk to your doctor, especially if you take medications. New or worsening symptoms deserve medical care.