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J Korean Sleep Res Soc. 2011;8(2):45-47.         doi: https://doi.org/10.13078/jksrs.11011
A Case of Exploding Head Syndrome: Focus on Polysomnographic Finding
Jung-Eun Yoon, Kyoung Jin Hwang, Tae-Hwan Roh, and Won Chul Shin
Department of Neurology, College of Medicine, Kyung Hee University, Seoul, Korea
Corresponding Author: Won Chul Shin ,Tel: +82-2-440-6166, Fax: +82-2-440-7243, Email: shinwc@khu.ac.kr
Received: 14 December 2011;  Accepted: 26 December 2011.
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Exploding head syndrome is a rare nocturnal disorder that the patient experiences a loud sound. The events occur usually during a period of drowsiness preceding sleep. The polysomnography studies in exploding head syndrome are very rare. We report a case of exploding head syndrome that a total of 8 typical episodes were recorded in polysomnography. A 51 years old female was admitted due to nocturnal loud sound from 2 month ago. There was no headache and no history of sleep problems. During the polysomnography, the events recorded 8 times, 6 of the events occurred during waking time prior to sleep onset, 2 developed in N1 sleep. In our case, the events appear to arise from early drowsiness with predominant alpha rhythm, with interspersed theta activity.
Keywords: Exploding head syndrome | Sleep.
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A Case of Exploding Head Syndrome  2012 June;9(1)
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