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Viral myositis
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Viral myositis

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Contributors: Neil Mendoza MD
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Synopsis

Muscle inflammation due to a viral infection. Patients present with muscle pain, tenderness, swelling, and weakness. The most frequent viral cause of myositis is the influenza virus, with symptoms of myositis typically starting a few days after the onset of fever.

The human immunodeficiency virus and the enteroviruses occasionally cause myositis. Many other viruses have been rarely reported to cause myositis. The pathogenesis of this entity varies by the virus causing the infection.

The influenza virus may be isolated from muscle tissue on biopsy. For other viruses, the virus may not be found in the muscle tissue, and in those cases, the myositis is felt to be immune- or cytokine-mediated.

Laboratory testing reveals an elevated creatinine kinase level. Treatment is symptomatic.

Codes

ICD10CM:
M60.9 – Myositis, unspecified

SNOMEDCT:
240105009 – Viral myositis

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Last Updated: 09/16/2015
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Viral myositis
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Viral myositis : Fever, Leg pain, Malaise, Muscle tenderness, Myalgia
Copyright © 2019 VisualDx®. All rights reserved.