Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
CASE REPORTS
Encephalopathy Associated with Influenza B in a Healthy Young Man
Masaki ShimamotoSatoshi OkadaTakeshi Terashima
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JOURNALS OPEN ACCESS

2017 Volume 56 Issue 14 Pages 1925-1929

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Abstract

A 19-year-old man presented with a fever, convulsions, and loss of consciousness at our hospital. The patient had a Glasgow Coma Scale score of 12. Influenza B virus infection was diagnosed using the rapid test kit, and an eight-fold increase in the serum levels of anti-influenza B virus antibody was confirmed using the complement fixation test. Brain magnetic resonance imaging showed multifocal high-signal lesions, and an electroencephalogram showed diffuse slowing of the background activity, indicating acute encephalopathy. After treatment with peramivir and methylprednisolone for 3 days, the patient was discharged without any neurological impairment. This was a case of influenza B infection associated with acute encephalopathy in a healthy young man.

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© 2017 by The Japanese Society of Internal Medicine
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