Viral and retroviral myositis
Viral myositis manifests with myalgia, weakness, and, rarely, rhabdomyolysis. Although virtually any virus can cause an acute myositis, influenza virus and enterovirus are the most common in North America and Northern Europe. Acute and subacute viral myositis is mostly benign and self-limited. Chronic viral myositis is associated with retroviruses and hepatitis viruses.
Nov. 16, 2020