Abstract
Sleep-related movement disorders are simple, non-purposeful and usually stereotyped movements that occur at sleep onset orduring sleep. In some cases they represent transient or insignificant symptom without any health consequences.
But they can alsocause insomnia, worsening of sleep quality or lead to injury. Bruxism and sleep-related leg cramps are very frequent.
Sleep-relatedrhythmic movement disorder, propriospinal myoclonus at sleep onset and benign sleep myoclonus of infancy are less common.The definition of these disorders, clinical picture, diagnostics and therapy are summarized in the article.