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[Restless legs syndrome].

There are no physical exam or lab findings that definitively identify RLS, so expert panels have developed specific clinical criteria to help diagnose the condition. Diagnosis is based on history alone, and there are five “essential criteria” that must be present to make the diagnosis: (1) a strong urge to move the legs or other body parts that (2) is brought on by rest, (3) gets better with activity, (4) gets worse in the evening or night, and (5) cannot be accounted for by another medical or behavioral condition. These essential criteria are partially defined by the URGE mnemonic: U=urge to move, R=rest-induced, G=gets better with activity, and E=evening or night-time accentuation.