[Restless legs syndrome in kidney patients].

Restless legs syndrome (RLS) is a sensorimotor disorder characterized by a strong urge to move the legs associated with paresthesias, motor restlessness, worsening of symptoms at night, and at least partial relief by activity. RLS has a negative impact on sleep, may cause depressive and anxious states, result in poor quality of life, and be a risk factor for cardiovascular disease. RLS is frequent in patients with end-stage renal disease; in this patient population it is consistently associated with severe comorbidities. It remains an underdiagnosed clinical condition. Appropriate diagnosis and management of RLS and sleep disorders is necessary to improve the quality of life and survival of kidney patients.