RLS is a creeping, crawly, or jumpy feeling in the legs. It makes you want to move them. Symptoms of RLS often occur when you are sitting or sleeping. This discomfort can keep you from falling asleep. In severe cases, you may also have symptoms in your arms.
RLS is more common in older people. It also tends to run in families. An iron deficiency, diabetes, or kidney problems can contribute to RLS.
Pregnancy has been linked to a temporary form of RLS. Symptoms most often occur during the third trimester and go away one month after giving birth.