Restless legs syndrome (RLS) is a chronic neurological disease. As the name suggests, sufferers complain of restless or aching legs, which can often only be alleviated by movement. Sometimes the arms, back or genital area can also be affected. RLS symptoms can include tingling, a cramp-like pulling sensation, an electrifying feeling or pain in the corresponding areas. The symptoms occur mainly in the evening and at night, which often leads to restless and sleepless nights and is therefore a psychological burden as well as a physical one. There are indications that the dopamine metabolism in the brain has an influence on the disorder. A genetic predisposition is also suspected. RLS can also be associated with iron deficiency, kidney weakness, pregnancy, thyroid dysfunction, polyneuropathy and rheumatoid arthritis and may be related to these conditions.