Restless legs syndrome – Wikipedia, the free encyclopedia: “Restless legs syndrome (RLS, Wittmaack-Ekbom’s syndrome, or sometimes referred to as Nocturnal myoclonus) is a condition that is characterized by an irresistible urge to move one’s legs. It is described as uncontrollable urges to move the limbs to stop uncomfortable or odd sensations in the body, most commonly in the legs, but can also be in the arms and torso. Moving the affected body part modulates the sensations, providing temporary relief.”