Can Sleep-Related Rhythmic Movement Disorder (RMD) occur every night or only occasionally?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Sleep-Related Rhythmic Movement Disorder (RMD) frequency varies from person to person. Some people experience rhythmic movements every night, while others only have episodes occasionally. The pattern can also change over time, with periods of frequent episodes followed by stretches of little to no activity.

Because RMD symptoms can overlap with other sleep and neurological conditions, understanding what's happening is the first step toward peace of mind and proper care. Take a free, instant, online symptom check to explore possible causes of your symptoms and get clear guidance on next steps.

Reviewed for medical accuracy: 07/20/2026

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Explanation

Sleep-Related Rhythmic Movement Disorder (RMD) is a condition that can affect sleep. It involves repetitive movements during sleep, such as body rocking or head banging. According to the study by Kohyama and colleagues, RMD can be experienced frequently, even every night, or it might occur only on some nights.

Key Points:

Frequency: RMD can vary in how often it happens. Some people might have these movements every night, while others might only notice them occasionally.
Types of Movements: Common movements include rocking the body, banging the head, or rolling the body. These movements happen during sleep and can sometimes disturb sleep.

Understanding the pattern of RMD is important for managing the condition. If you or someone you know is experiencing symptoms of RMD, it might be helpful to track how often the movements occur and discuss this with a healthcare provider. You can also check your symptoms with Ubie's free AI-powered tool to better understand what might be causing your sleep disturbances.

(References)

Kohyama J, Matsukura F, Kimura K, & Tachibana N. (2002). Rhythmic movement disorder: polysomnographic study .... Brain & development, 11751023.
Sun X, Jin C, Cui C, Chen Z, & Dai Q. (2025). Reward network mechanism in anhedonia and depression. PloS one, 40966302.
De Vicente Delmás A, Sanchez-Bilbao L, Calvo-Río V, Martínez-López D, Herrero-Morant A, Galíndez-Agirregoikoa E, et al. (2023). Uveitis in psoriatic arthritis: study of 406 patients in a single .... RMD open, 36635002.

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