Impulse control disorders with the use of dopaminergic agents in restless legs syndrome: a case-control study.

Study Objectives: To determine the frequency of impulse control disorders (ICDs) with the use of dopaminergic agents in restless legs syndrome (RLS).

Design: Prospective case-control study using a screening questionnaire for ICDs, followed by phone interview to confirm diagnoses for those meeting preset scoring thresholds on the questionnaire.

Setting: Academic, comprehensive sleep medicine center.