Subjective poor sleep quality in Chinese patients with Parkinson's disease without dementia

摘要

Parkinson's disease (PD) is a common progressive neurological disorder and is composed of motor and nonmotor symptoms. Sleep disturbances are frequent problems for patients with PD. The relationship between sleep disturbances with Hoehn and Yahr (H&Y) staging have been demonstrated. However, the relationship between sleep disorders and H&Y is still unclear in patients with PD without dementia in Chinese PD patients. In this study, we interviewed 487 non-demented PD patients of Chinese Han descents by H&Y classification. We found that night sleep quality was significantly associated with the severity of PD (P=0.008). Panic disorder severity scale (PDSS) total scores were correlated with PD non-motor symptoms scale (PDNMS) scores (r=-0.528, P<0.001), the Hamilton depression scale (HAMD) scores (r=-0.545, P<0.001) and the Hamilton anxiety scale (HAMA) scores (r=-0.498, P<0.001). Our results indicated that sleep quality deteriorated with the advancing of PD in Chinese non-demented patients with PD. Depression and anxiety may partly explain sleep disturbances in nondemented patients with PD.