The chief symptom is an urge to move the legs. Common accompanying characteristics of RLS include: RLS 
Sensations that begin while resting. The sensation typically begins after you've been lying down or sitting for an extended time, such as in a car, airplane or movie theater.
Relief with movement. The sensation of RLS lessens with movement, such as stretching, jiggling the legs, pacing or walking.
Worsening of symptoms in the evening. Symptoms occur mainly at night.
Nighttime leg twitching. RLS may be associated with another, more common condition called periodic limb movement of sleep, which causes the legs to twitch and kick, possibly throughout the night, while you sleep.
 People typically describe RLS symptoms as compelling, unpleasant sensations in the legs or feet. They usually happen on both sides of the body. Less commonly, the sensations affect the arms. RLS The sensations, which generally occur within the limb rather than on the skin, are described as: 
Crawling
Creeping
Pulling
Throbbing
Aching
Itching
Electric
 Sometimes the sensations are difficult to explain. People with RLS usually don't describe the condition as a muscle cramp or numbness. They do, however, consistently describe the desire to move the legs. RLS It's common for symptoms to fluctuate in severity. Sometimes, symptoms disappear for periods of time, then come back.