How does alcohol consumption affect sleepwalking?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Alcohol can worsen sleepwalking by disrupting normal brain activity during sleep, which may trigger unusual nighttime behaviors such as walking, talking, or performing complex actions while unconscious. Because alcohol suppresses REM sleep and increases deep non-REM sleep—the stage when sleepwalking typically occurs—it raises the likelihood and intensity of episodes, especially in people already prone to parasomnias.

If you or a loved one are experiencing sleepwalking, don't guess at the cause or wait to see if it resolves on its own. Underlying triggers can range from alcohol use and stress to sleep disorders or medication side effects—each requiring a different approach. Take a free, instant, online symptom check to better understand what may be driving your symptoms and get clear guidance on your next steps.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Discover if alcohol causes sleepwalking episodes Find likely causes of your sleepwalking Learn when sleepwalking needs care tonight See OTC options for sleep disruption Find a sleep specialist for sleepwalking Discover medically proven sleepwalking home remedies Understand if sleepwalking could signal something serious

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Explanation

Alcohol can have a significant impact on sleepwalking by altering brain activity during sleep. According to the research, alcohol consumption can lead to unusual sleep behaviors, possibly by affecting the REM (Rapid Eye Movement) sleep phase. This phase is crucial for restful sleep, and disturbances in it can lead to disorders like sleepwalking.

REM Sleep and Alcohol: Alcohol can disrupt REM sleep, leading to behaviors that are not typical during normal sleep cycles. This disruption can increase the likelihood of sleepwalking episodes.
Brain Activity: Alcohol affects the brain's normal functioning, which can lead to sleepwalking. The changes in brain chemistry and activity caused by alcohol can trigger episodes of sleepwalking.

Overall, while alcohol might be used to relax or fall asleep, it can actually make sleepwalking worse by interfering with normal sleep patterns. If you or someone you know is experiencing sleepwalking or other sleep issues, consider using a free symptom checker to help identify potential causes and determine if you should consult a healthcare professional.

(References)

Chakraborty R, Biswas T, Mishra BR, & Parmar A. (2024). Acute REM sleep behaviour disorder associated with .... Drug and alcohol review, 38287722.
Cochen De Cock V. (2016). Sleepwalking. Current treatment options in neurology, 26874839.
McLaughlin T, Blum K, Oscar-Berman M, Febo M, Agan G, Fratantonio JL, et al. (2015). Putative dopamine agonist (KB220Z) attenuates lucid .... Journal of behavioral addictions, 26132915.

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