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KMID : 1201420220150010057
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Journal of Neurocritical Care
2022 Volume.15 No. 1 p.57 ~ p.60
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Morvan syndrome presenting with agrypnia excitata in post-thymectomy myasthenia gravis: a case report
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Oh Seong-Il
Kang Mi-Ri
Ji Ki-Hwan
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Abstract
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Background: Morvan syndrome is characterized by neuromyotonia, dysautonomia, and various neuropsychiatric symptoms, as well as sleep disturbances, although these are less common than neuromuscular symptoms. Herein, we report a case of Morvan syndrome with peculiar sleep disturbances, documented via polysomnography.
Case Report: We present herein the case of a 67-year-old man who developed agitation and severe insomnia after undergoing a thymectomy for the treatment of myasthenia gravis, which was subsequently diagnosed as agrypnia excitata due to Morvan syndrome, based on 24-hour polysomnography.
Conclusion: We presented the 24-hour polysomnographic findings of a case of agrypnia excitata in Morvan syndrome. An extended polysomnography, however, might be helpful in analyzing sleep disturbances in Morvan syndrome.
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KEYWORD
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Morvan syndrome, Myasthenia gravis, Insomnia, Polysomnography, Thymoma
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