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Updated: Aug 23, 2026

Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease
Published on: July 24, 2019
REM sleep behavior disorder in Parkinson's disease and dementia with Lewy bodies
Bradley F Boeve1, Michael H Silber, Tanis J Ferman
1Sleep Disorders Center, Department of Neurology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA. bboeve@mayo.edu
Abstract:
Rapid eye movement (REM) sleep behavior disorder (RBD) is a parasomnia manifested by vivid, often frightening dreams associated with simple or complex motor behavior during REM sleep. Patients appear to "act out their dreams," in which the exhibited behaviors mirror the content of the dreams. Management of RBD involves counseling about safety measures in the sleep environment; in those at risk for injury, clonazepam and/or melatonin is usually effective. In this article, the authors present a detailed review of the clinical and polysomnographic features, differential diagnosis, diagnostic criteria, management strategies, and pathophysiologic mechanisms of RBD. They then review the literature and their institutional experience of RBD associated with neurodegenerative disease, particularly Parkinson's disease and dementia with Lewy bodies. The evolving data suggests that RBD may have clinical diagnostic and pathophysiologic significance in isolation and when associated with neurodegenerative disease.
Insights
Rapid eye movement sleep behavior disorder (RBD) involves acting out dreams during REM sleep. Management includes safety counseling and medications like clonazepam or melatonin, with growing evidence of its link to neurodegenerative diseases.
Area of Science:
- Neurology
- Sleep Medicine
- Neuroscience
Background:
- Rapid eye movement (REM) sleep behavior disorder (RBD) is a parasomnia characterized by motor activity during REM sleep, often mirroring dream content.
- Patients with RBD may physically act out vivid or frightening dreams.
- Current management focuses on environmental safety and pharmacotherapy, with clonazepam and melatonin being common treatments.
Purpose of the Study:
- To provide a comprehensive review of Rapid eye movement sleep behavior disorder (RBD).
- To discuss the clinical, polysomnographic, and diagnostic features of RBD.
- To explore the association between RBD and neurodegenerative diseases, particularly Parkinson's disease and dementia with Lewy bodies.
Main Methods:
- Review of clinical and polysomnographic features of RBD.
- Analysis of differential diagnosis and diagnostic criteria for RBD.
- Examination of management strategies and pathophysiologic mechanisms of RBD.
- Literature review and institutional experience of RBD in neurodegenerative disease.
Main Results:
- RBD is characterized by dream-enacting behaviors during REM sleep.
- Effective management strategies include safety counseling and medications such as clonazepam and melatonin.
- RBD is increasingly recognized as potentially significant in isolation and in association with neurodegenerative conditions.
Conclusions:
- RBD is a significant parasomnia with implications for patient safety.
- Effective management strategies are available for RBD.
- Emerging data highlight the potential diagnostic and pathophysiologic importance of RBD in the context of neurodegenerative diseases like Parkinson's disease and dementia with Lewy bodies.
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