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Probable diffuse Lewy body disease presenting as REM sleep behavior disorder
R S Turner1, R D Chervin, K A Frey
1Department of Neurology, University of Michigan, Ann Arbor, USA.
Neurology
|August 1, 1997
Summary
Rapid eye movement sleep behavior disorder can signal neurodegenerative diseases like Parkinson's. A case study shows this disorder can precede diffuse Lewy body disease, a type of dementia.
Area of Science:
- Neurology
- Sleep Medicine
- Neurodegenerative Diseases
Background:
- Rapid eye movement sleep behavior disorder (RBD) is increasingly recognized as an early sign of neurodegenerative disorders.
- Parkinsonism-related disorders, such as Parkinson's disease, are commonly associated with RBD.
- The predictive value of RBD for other neurodegenerative conditions is an active area of research.
Observation:
- A 72-year-old male presented with a 17-year history of polysomnography-confirmed RBD.
- The patient subsequently developed progressive dementia.
- The dementia met clinical criteria for diffuse Lewy body disease.
Findings:
- This case highlights the potential for RBD to precede the clinical manifestation of diffuse Lewy body disease.
- The long prodromal phase of RBD in this patient underscores its significance as an early biomarker.
- Diffuse Lewy body disease should be considered in the differential diagnosis of progressive neurodegenerative disorders presenting with RBD.
Implications:
- RBD may serve as an important early diagnostic marker for diffuse Lewy body disease, preceding cognitive decline.
- Early identification of patients with RBD could facilitate timely diagnosis and management of associated neurodegenerative conditions.
- Further research is warranted to elucidate the precise relationship between RBD and the spectrum of synucleinopathies.