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Case Report
4 (
1
); 51-54
doi:
10.4103/0976-3147.105614

Three cases of acute myositis in adults following influenza‑like illness during the H1N1 pandemic

Departments of Neurology, University of Utah School of Medicine, United States of America
Departments of Pathology, University of Utah School of Medicine, United States of America
Address for correspondence: Dr. Summer Gibson Department of Neurology, Clinical Neurosciences Center 175 N Medical Drive East, Salt Lake City, Utah 84132 USA summer.gibson@hsc.utah.edu
Licence
This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
Disclaimer:
This article was originally published by Thieme Medical and Scientific Publishers Private Ltd. and was migrated to Scientific Scholar after the change of Publisher; therefore Scientific Scholar has no control over the quality or content of this article.

Abstract

ABSTRACT

Acute viral myositis is a rare condition that occurs during the recovery phase of an illness, most commonly influenza. It is characterized by muscle pain and weakness with an isolated laboratory finding of elevated serum creatine kinase (CK). We describe three previously healthy patients who were hospitalized after developing myositis following influenza‑like illness during the 2009 influenza A (H1N1) virus pandemic. All experienced myalgias and weakness in all four extremities, including distal upper extremities, associated with an elevated CK level that resolved along with their myalgias and weakness within one week with supportive care. These cases serve as a reminder that influenza‑related myositis may have atypical characteristics depending on the strain of influenza, and clinicians should be open to this possibility when new outbreaks occur.

Keywords

H1N1
influenza
muscle weakness
myositis
viral myositis

Conflicts of interest

None declared

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