What are the causes of leg twitching when asleep?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Leg twitching during sleep is often caused by conditions such as restless legs syndrome (RLS) or nocturnal myoclonus (periodic limb movement disorder). These conditions trigger involuntary leg movements or uncomfortable sensations that can disrupt sleep quality and leave you feeling tired the next day.

Because nighttime leg twitching can stem from several different underlying causes—ranging from nerve issues and mineral deficiencies to sleep disorders—identifying the specific reason behind your symptoms is the key to finding relief. A free, instant, online symptom check can help you pinpoint likely causes and guide your next steps with confidence.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Discover why your leg twitches asleep Learn if leg twitching needs care Find likely causes of leg twitching See OTC options for leg twitching Find a doctor for leg twitching Discover home remedies for leg twitching Understand if nocturnal leg twitching is serious

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Explanation

Leg twitching while asleep is often linked to two main conditions: restless legs syndrome (RLS) and nocturnal myoclonus.

Restless Legs Syndrome (RLS):

RLS is a condition where you feel an uncontrollable urge to move your legs, usually because of uncomfortable sensations. These sensations often occur in the evening or nighttime hours when you are sitting or lying down.
The need to move can make it hard to fall asleep or stay asleep.

Nocturnal Myoclonus:

This condition involves sudden, involuntary jerking movements of the legs during sleep. These jerks can happen repeatedly throughout the night, potentially disrupting sleep.

Both conditions can affect sleep quality and overall well-being. If you or someone you know is experiencing these symptoms, you can start by using a free symptom checker to better understand what might be causing your leg twitching and get guidance on next steps.

(References)

Lugaresi E, Cirignotta F, Coccagna G, & Montagna P. (1986). Nocturnal myoclonus and restless legs syndrome. Advances in neurology, 3946114.
Milligan SA, & Chesson AL. (2002). Restless legs syndrome in the older adult: diagnosis and .... Drugs & aging, 12390051.
van der Veen S, Caviness JN, Dreissen YEM, Ganos C, Ibrahim A, Koelman JHTM, et al. (2022). Myoclonus and other jerky movement disorders. Clinical neurophysiology practice, 36324989.

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