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J Korean Sleep Res Soc. 2004;1(2):46-49.         doi: https://doi.org/10.13078/jksrs.04018
A case of Isolated Recurrent Hypersomnia With Excessive Long Duration of Sleepiness
Sung kyu Hong, Seung chul Cho, Kyung mi Oh, Sung bum Goh, Min Kyu Park, Kun Woo Park, Eae Hie Lee, and Jin kyu Han
Department of Neurology, Korea University, College of Medicine
Corresponding Author: Jin kyu Han ,Tel: +82-2-920-5837, Fax: +82-2-925-2472, Email: dystonia@hanmail.net
Received: 17 December 2004;  Accepted: 29 December 2004.
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Isolated recurrent hypersomnia is characterized by recurrent episodes of hypersomnia without hyperphagia and hypersexuality and usually lasts a few days to 3 weeks and typically occur weeks or months apart. A 44-year-old woman with a 13-year-history of excessive daytime sleepiness(EDS) presented hypersomnic period that occurred several times a year with duration of minimum 12 hours to maximum 40 days and lasted 6 monsths only in winter. During hypersomnic period, she did not present any other symptoms. Physical and neurological examinations, laboratory results and brain MRI showed no abnormality. Nocturnal polysomnographic study and multiple sleep latency test (MSLT) in the end of hypersomnia period showed mild obstructive sleep hypopnea syndrome. This is the first case of isolated recurrent hypersomnia with excessive long duration of sleepiness.
Keywords: Isolated recurrent hypersomnia | Excessive long duration | Lithium
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Diagnosis and Assessment of Excessive Daytime Sleepiness  2004 December;1(2)
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