Sleep-Related Rhythmic Movement Disorder Quiz

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Dr. Harase spent his junior and senior high school years in Finland and the U.S. After graduating from the University of Washington (Bachelor of Science, Molecular and Cellular Biology), he worked for Apple Japan Inc. before entering the University of the Ryukyus School of Medicine. He completed his residency at Okinawa Prefectural Chubu Hospital, where he received the Best Resident Award in 2016 and 2017. In 2021, he joined the Department of Cerebrovascular Medicine at the National Cerebral and Cardiovascular Center, specializing in hyperacute stroke.

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Acting abnormal in my sleep

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Learn more about Sleep-related rhythmic movement disorder

Content updated on Sep 20, 2022

What is sleep-related rhythmic movement disorder?

Sleep-related rhythmic movement disorder (RMD) involves rhythmic, repeated body movements while drowsy or asleep. Loud humming or other sounds are sometimes made along with the body motions. It is common in babies and children. The exact cause is unknown, but is seen in children and adults who are not in perfect health. Rare causes include head injury, stress, and infection of the brain.

Symptoms of sleep-related rhythmic movement disorder

Unusual behaviors or actions when sleeping
Knocking head back and forth against the bed when sleeping
Rocking back-and-forth on all fours when sleeping
Shaking head left and right when asleep
Suck my thumb when sleeping
Teeth grinding while sleeping
Legs shake or rock when falling asleep

Questions your doctor may ask to check for sleep-related rhythmic movement disorder

Your doctor may ask these questions to diagnose sleep-related rhythmic movement disorder

Do you have unusual behaviors or actions when sleeping?
Do you knock your head back and forth against the bed or pillow when sleeping?
When sleeping, do you sometimes rock back-and-forth on all fours?
Do you shake your head left and right when asleep?
Do you suck your thumb when sleeping?

Treatment for sleep-related rhythmic movement disorder

In most cases, the symptoms fade away as the child becomes older or the health of the person improves. Medications like sedatives may be prescribed to reduce symptoms.