Restless legs syndrome (RLS), also called Willis-Ekbom Disease, is a neurological sleep disorder in which a person experiences an urge to move their legs or arms, and this urge is accompanied by or in response to uncomfortable sensations in the limbs. These uncomfortable sensations are often described as creeping, crawling, tingling, burning, or itching. Restless legs syndrome can affect just one side of the body, but it most often occurs in both sides at once; sometimes the pain can even migrate around.
The prevalence statistics of restless legs syndrome vary widely but range from 2 to 7.2 percent of the general population. The prevalence of restless legs syndrome increases with age, and women are more likely than males to have this condition. Restless legs syndrome is generally diagnosed after symptoms have persisted for at least three months.