What are the main factors that contribute to sleep paralysis?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Sleep paralysis is a temporary inability to move or speak while falling asleep or waking up. Common causes include stress, sleep deprivation, irregular sleep schedules, and sleep disorders such as narcolepsy or insomnia. Mental health conditions like anxiety, PTSD, and depression may also trigger episodes, as can lifestyle factors including excessive caffeine, alcohol use, or sleeping on your back.

Because sleep paralysis can overlap with other conditions, understanding your specific symptoms is the fastest way to know whether it's harmless or worth discussing with a doctor. Take a free, instant, online symptom check to get personalized insights and clear next steps in minutes.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Learn if sleep paralysis needs care today Discover likely causes of your sleep paralysis See if sleep paralysis could be something serious Find OTC options for sleep paralysis symptoms Find a sleep medicine specialist near you Learn medically valid sleep paralysis home remedies Understand what’s causing sleep paralysis episodes

Not seeing your question? No worries.

Submit your own Question

Explanation

Sleep paralysis happens when you wake up but can't move your body. It can be scary, but it is not dangerous.

Main Factors:

Sleep Issues: Not getting enough sleep or having an irregular sleep schedule can increase the chances of sleep paralysis.
Stress and Anxiety: High levels of stress or anxiety can make sleep paralysis more likely.
Sleep Disorders: Conditions like narcolepsy are often associated with sleep paralysis.
Mental Health: Issues like depression or PTSD might also contribute to sleep paralysis.
Lifestyle: Things like sleeping on your back or using certain substances might play a role.

If you're experiencing symptoms that concern you, check your symptoms with a free AI-powered tool to better understand what might be happening and whether you should seek medical attention.

(References)

Stefani A, & Högl B. (2021). Nightmare Disorder and Isolated Sleep Paralysis. Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics, 33230689.
Denis D, French CC, & Gregory AM. (2018). A systematic review of variables associated with sleep .... Sleep medicine reviews, 28735779.
Wróbel-Knybel P, Flis M, Rog J, Jalal B, Wołkowski L, & Karakuła-Juchnowicz H. (2022). Characteristics of Sleep Paralysis and Its Association with .... International journal of environmental research and public health, 35805480.

Thinking about asking ChatGPT?Ask me instead

Tell your friends about us.

We would love to help them too.

For First Time Users

What is Ubie’s Doctor’s Note?

We provide a database of explanations from real doctors on a range of medical topics. Get started by exploring our library of questions and topics you want to learn more about.

Was this page helpful?

Purpose and positioning of servicesUbie Doctor's Note is a service for informational purposes. The provision of information by physicians, medical professionals, etc. is not a medical treatment. If medical treatment is required, please consult your doctor or medical institution. We strive to provide reliable and accurate information, but we do not guarantee the completeness of the content. If you find any errors in the information, please contact us.