Isolated hypersomnia due to bilateral thalamic infarcts
Munish Kumar Goyal1, Gyanendra Kumar, Pradeep Kumar Sahota
1Department of Neurology, University of Missouri School of Medicine, Columbia, MO, USA. goyalm@missouri.edu
Summary
This study reports a rare case where excessive daytime sleepiness, known as hypersomnia, was the only initial symptom of damage to both sides of the brain's thalamus, caused by bilateral thalamic infarcts.
Area of Science:
- Neurology
- Sleep Medicine
Background:
- Thalamic infarcts are cerebrovascular events affecting the thalamus.
- The thalamus plays a crucial role in regulating sleep-wake cycles and consciousness.
Observation:
- A unique patient presented with hypersomnia as the sole initial symptom.
- No other neurological deficits were observed at presentation.
Findings:
- Bilateral thalamic infarcts were identified as the cause of the patient's hypersomnia.
- This case highlights an unusual presentation of thalamic stroke.
Implications:
- Suggests that isolated hypersomnia can be a presenting symptom of bilateral thalamic infarcts.
- Emphasizes the importance of considering cerebrovascular causes in unexplained hypersomnia.
- May inform diagnostic approaches for patients with new-onset sleep disturbances.
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