Source:http://linkedlifedata.com/resource/umls/id/C0035258
MEDLINEPLUS: <p>Restless legs syndrome (RLS) causes a powerful urge to move your legs. Your legs become uncomfortable when you are lying down or sitting. Some people describe it as a creeping, crawling, tingling or burning sensation. Moving makes your legs feel better, but not for long. </p><p>In most cases, there is no known cause for RLS. In other cases, RLS is caused by a disease or condition, such as anemia or pregnancy. Some medicines can also cause temporary RLS. Caffeine, tobacco and alcohol may make symptoms worse.</p><p>Lifestyle changes, such as regular sleep habits, relaxation techniques and moderate exercise during the day can help. If those don't work, medicines may reduce the symptoms of RLS.</p><p style="font-weight:bold;font-style:italic;">NIH: National Heart, Lung, and Blood Institute</p>,MSH: A disorder characterized by aching or burning sensations in the lower and rarely the upper extremities that occur prior to sleep or may awaken the patient from sleep. Complying with an irresistible urge