Sleep-related movement disorders represent an array of phenomena characterized by abnormal movements during or just preceding sleep. The majority of sleep-related movement disorders is represented by benign conditions which have no known adverse effects on health. Many of these disorders include muscular jerking of the torso or legs. Some disorders consist of repetitive movement of the legs. The severity of each of these disorders varies greatly and, in severe forms, the sleep-related movement disorders can result in sleep disruption and daytime sleepiness. Importantly, similar movements can arise from disease of muscle, nerve, spinal cord or even brain, so if movement is frequent or severe, it is best to consult a health care professional.
