1. Relationship between sleep disorders and other non-motor symptoms in Parkinson's disease
- Author
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Kurtis, MM, Rodriguez-Blazquez, C, Martinez-Martin, P, Kulisevsky J., and ELEP Grp
- Subjects
Insomnia ,Excessive daytime sleepiness ,Parkinson's disease ,SCOPA-Sleep scale ,Non-motor symptoms - Abstract
Background: The association between sleep disorders and other non-motor symptoms (NMS) in Parkinson's disease (PD) has been scarcely investigated. Objective: To describe the prevalence of insomnia and hypersomnia in PD and analyze their relationship with other NMS. Methods: Cross-sectional, multicenter study including 388 PD patients evaluated with Hoehn and Yahr, Clinical Impression of Severity Index for PD, Scales for Outcomes in Parkinson's Disease (SCOPA)-Sleep(S), SCOPA-Cognition, SCOPA-Psychiatric Complications, SCOPA-Autonomic, Hospital Anxiety and Depression Scale, and fatigue and pain visual analogue scales. Spearman correlation coefficients, Mann-Whitney test and multiple linear regression analysis were applied. Results: Mean age (54% male) was 65.9 +/- 11.2 years old, with disease duration of 8:1 +/- 6.0 years and median HY = 2 (range: 1-5). Mean SCOPA-S nocturnal sleep (NS) was 5.4 +/- 4.0 (range: 0-15), daytime sleepiness (DS) was 3.76 +/- 3.04 (range: 0-15). Most of the sample declared nocturnal or daytime sleep problems (87.4%). Weak-to-moderate correlations were found between sleep disturbances and other NMS (range: 0.14-0.37). SCOPA-S subscales showed higher scores with the presence of most other NMS such as psychiatric complications and autonomic dysfunctions (p < 0.05). Regression models showed that fatigue, depression, urinary, cardiovascular, and thermoregulatory dysfunctions were significant determinants of SCOPA-NS score (variance: 23%); cognitive impairment, urinary, cardiovascular, and pupillomotor disorders influenced SCOPA-DS score (variance: 14%). Conclusions: Insomnia and daytime sleepiness are extremely prevalent in PD. Depression, fatigue, cognitive impairment, cardiovascular, urinary and thermoregulatory dysfunctions may contribute to insomnia/hypersomnia. This is the first clinical study to relate cardiovascular and thermoregulatory dysfunctions with sleep in PD. (C) 2013 Elsevier Ltd. All rights reserved.
- Published
- 2013