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Updated: Aug 7, 2026

Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease
Published on: July 24, 2019
Mood and sleep in Parkinson's disease
Leora L Borek1, Robert Kohn, Joseph H Friedman
1Department of Psychiatry and Human Behavior, Butler Hospital. Leolisa@yahoo.com
Depression and anxiety significantly correlate with sleep disturbances, including poor sleep quality, nightmares, and daytime sleepiness, in Parkinson's disease patients. Addressing these mental health conditions is crucial for improving patient quality of life.
Area of Science:
- Neurology
- Sleep Medicine
- Psychiatry
Background:
- Parkinson's disease (PD) is a neurodegenerative disorder impacting motor function.
- Sleep disturbances are common in PD patients, affecting their quality of life.
- The relationship between the severity of depression and anxiety and specific sleep issues in PD requires further investigation.
Purpose of the Study:
- To investigate the association between the severity of depression and anxiety and specific types of sleep disturbances in patients diagnosed with Parkinson's disease.
Main Methods:
- 120 idiopathic Parkinson's disease patients were recruited.
- Standardized scales (Hamilton Rating Scale for Depression/Anxiety, Covi Anxiety Scale, PSQI, ESS) were used for assessment.
- Nightmares and REM sleep behavior disorder (RBD) were evaluated using questionnaires and dream logs.
Main Results:
- Depression and anxiety severity significantly correlated with poor sleep quality, daytime somnolence, and nightmares.
- Depression severity explained variance in poor sleep quality and nightmares.
- Anxiety severity explained variance in daytime somnolence.
Conclusions:
- Depressive and anxiety symptoms are linked to sleep disturbances in Parkinson's disease patients.
- Screening for depression and anxiety in PD patients with sleep disorders is recommended.
- Treating depression and anxiety can improve the quality of life for individuals with Parkinson's disease.
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