Restless legs syndrome (RLS) is a disorder that causes a strong urge to move your legs. This urge to move often occurs with strange and unpleasant feelings in your legs. Moving your legs relieves the urge and the unpleasant feelings. Here are some inputs from Dr. Mohit Goyal Neurologist at the PSRI Hospital on the causes and symptoms of the restless legs syndrome. What does it mean? How common is it in India? Restless legs syndrome is a neurological sensory-motor disorder usually characterized by an unpleasant feeling in the legs causing an urge to constantly keep the legs moving.