This study concludes that laryngeal abnormalities in Parkinson's disease show a high degree of gender differences. The percentage of patients with abnormal abduction of the vocal cord was higher than has been reported in other studies. Vocal-fold bowing appear to be related to vocal fold atrophy. Although patients with Parkinson's disease frequently exhibit vocal fold atrophy, other mechanisms and causes should be discussed. Patients with tremor and common laryngeal symptoms were observed. These findings were not expected and further studies of this phenomena would be useful.