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restless legs syndrome rest·less legs syndrome (rěst'lĭs)
Discomfort or twitching in the legs that occurs after going to bed and often leads to insomnia.
condition characterized by an uncontrollable urge to move the legs that usually appears during periods of rest, especially while sitting or lying down. Many experience symptoms immediately before the onset of sleep. A person with restless legs syndrome experiences various sensations in the legs, such as pressure, pins and needles, pulling, crawling, or pinching, but rarely pain; occasional involuntary jerking movements also may occur. Temporary relief may be provided by movement of the legs. Symptoms will continue to worsen with aging if left untreated.