Published on: 6/12/2025
Why might someone flex their legs while sleeping?
Flexing legs while sleeping might be due to conditions like restless legs syndrome or periodic limb movements, which can cause discomfort or an urge to move the legs.
Explanation
Flexing legs during sleep can be linked to conditions such as restless legs syndrome (RLS) or periodic limb movements in sleep (PLMS). These conditions can make a person feel uncomfortable or have an urge to move their legs, especially at night.
Restless Legs Syndrome (RLS): This condition makes people feel like they need to move their legs, often because of uncomfortable sensations. The need to move can be stronger when resting or sleeping, causing leg movements.
Periodic Limb Movements in Sleep (PLMS): This involves repeated leg movements during sleep. It can happen without the person being aware and may disrupt sleep.
Sometimes, medications can also cause or worsen these symptoms. If someone is experiencing these symptoms and it affects their sleep or daily life, it is important to talk to a healthcare provider for advice and potential treatment options.
(References)
- Lugaresi E, Cirignotta F, Coccagna G, & Montagna P. (1986). Nocturnal myoclonus and restless legs syndrome. Advances in neurology, 3946114.
- Smith RC. (1985). Relationship of periodic movements in sleep (nocturnal .... Sleep, 3876585.
- Page RL 2nd, Ruscin JM, Bainbridge JL, & Brieke AA. (2008). Restless legs syndrome induced by escitalopram. Pharmacotherapy, 18225972.
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