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[Sleep disturbances in a case of Morvan's chorea (author's transl)]
Abstract:
Six nocturnal polygraphic recordings were carried out in a young man with fibrillary chorea of Morvan, during the acute period of the disease. Sleep was remarkably fragmented by numerous and brief awakenings but the total sleep time fluctuated between 157 and 312 mins.; the sleep structure was altered by the almost total absence of stages 3,4 and REM. During the day, the subject had one or two periods of sleep (1-2 hours) and complained of being tired. The nocturnal awakenings were correlated by the patient with pain and burning dysaesthesiae of distal distribution that were more severe than those occurring during the day. The patient improved gradually, and five month later both sleep disturbances and other signs of disease had disappeared.
Insights
Fibrillary chorea of Morvan severely disrupts sleep, causing fragmentation and absence of deep sleep stages. Symptoms, including sleep disturbances, resolved with patient improvement.
Area of Science:
- Neurology
- Sleep Medicine
- Clinical Neuroscience
Background:
- Fibrillary chorea of Morvan is a rare neurological disorder.
- Sleep disturbances are a potential symptom of neurological conditions.
Observation:
- Nocturnal polygraphic recordings were performed on a young male patient during the acute phase of Morvan's chorea.
- Sleep was characterized by frequent, brief awakenings, significantly reduced total sleep time, and an almost complete absence of slow-wave sleep (stages 3-4) and rapid eye movement (REM) sleep.
Findings:
- Daytime sleepiness and fatigue were reported, with the patient experiencing 1-2 sleep episodes daily.
- Nocturnal awakenings were strongly associated with severe, burning dysesthesias and pain in the distal extremities.
- Gradual clinical improvement over five months led to the resolution of both sleep disturbances and other disease manifestations.
Implications:
- This case highlights the profound impact of Morvan's chorea on sleep architecture and quality.
- Understanding the link between neurological symptoms and sleep disruption is crucial for patient management.
- The resolution of sleep issues alongside clinical improvement suggests a potential biomarker or indicator of disease recovery.