We analyzed the questionnaires concerning sleep-wake complaints in 1,575 Parkinsonian patients and 2,509 controls of 945 office workers and 1564 seniors living at home. The questionnaire included 20 contents. The Parkinsonian patients complained of sleep-wake disturbances more frequently than the controls in initiation disturbance, frequent awakenings in night, early morning awakening, day time sleepiness, usage of sleep pills, parasomnias, restless legs symptoms, nocturnal myoclonus, snoring, apnea episodes and dyspnea in night (chi-square method). The incidences of restless legs symptoms and nocturnal myoclonus increased significantly with worsening of physical symptoms in the Parkinsonian patients (p less than 0.01).