[The restless leg syndrome]

The restless legs syndrome (RLS) is characterized by unusual sensations in the lower legs which are difficult to describe. These sensations are experienced in the muscles and bones. They always occur at rest, most frequently at night, and disappear normally on movement. The etiology and pathogenesis are still unknown. The incidence is stated to be 5%. RLS is the fourth most frequent cause of insomnia. Treatment has been empirical. In recent single controlled investigations clonazepam (Rivotril), carbamazepine (Tegretol) and levodopa plus benserazide (Madopar) have all proved to be superior to a placebo and these drugs are, therefore, recommended. Local treatment should, however, be tried initially in all patients.