A diagnosis of RLS is based on the following criteria:
• You have a strong, often irresistible urge to move your legs, usually accompanied by uncomfortable sensations.
• Your symptoms start or get worse when you're resting, such as sitting or lying down.
• Your symptoms are partially or temporarily relieved by activity, such as walking or stretching.
• Your symptoms are worse at night.
• Symptoms can't be explained solely by another medical or behavioral condition.
Blood tests, particularly for iron deficiency, may be ordered to rule out other possible causes for your symptoms.
Sometimes, treating an underlying condition, such as iron deficiency, greatly relieves symptoms of RLS. Correcting an iron deficiency may involve receiving iron supplementation orally or intravenously. However, take iron supplements only with medical supervision and after your doctor has checked your blood-iron level. If you have RLS without an associated condition, treatment focuses on lifestyle changes. If those aren't effective, your doctor might prescribe medications.
Courtesy: Mayo Clinic