Myositis
What Is It?
Myositis is the medical term for muscle inflammation. In myositis, inflammation damages the fibers of a muscle. This causes muscles to be weak by interfering with the ability of the muscles to contract. Although myositis can cause muscle aches and muscle tenderness, weakness is usually the dominant symptom.
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About the Author
Robert H. Shmerling, MD, Senior Faculty Editor, Harvard Health Publishing; Editorial Advisory Board Member, Harvard Health Publishing
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