Which disorder is a common sleep movement disorder in which a person has unpleasant sensations in the legs and an irresistible urge to move them to relieve the pain?

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Restless leg syndrome is a common sleep movement disorder characterized by unpleasant sensations in the legs and an irresistible urge to move them to relieve the pain. Periodic limb movement in sleep can also occur with restless leg syndrome but is not the primary symptom. Cataplexy is a sudden loss of muscle tone triggered by emotions and is a symptom of narcolepsy. Sleep apnea is a disorder in which breathing repeatedly stops and starts during sleep.

Which Disorder Is a Common Sleep Movement Disorder in Which