An urge to move the legs, usually accompanied or caused by uncomfortable and unpleasant sensations in the legs (for pediatric restless legs syndrome, the description of these symptoms should be in the child's own words).
The symptoms begin or worsen during periods of rest or inactivity. Symptoms are partially or totally relieved by movement. Symptoms are worse in the evening or at night than during the day or occur only in the night/evening.
Adapted from American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders. Fifth Edition. Washington, DC. American Psychiatric Association. 2013. Page 828.