Myalgia: 6 Common Reasons for Experiencing Muscle Pain

2. Infections

Myalgia is commonly experienced when the body is suffering from a bacterial infection (such as strep throat, an ear infection, or a urinary tract infection) or viral infection (like influenza, bronchitis or HIV/AIDS).

Such infections can cause inflammation in the muscles, known as myositis. According to WebMD, this inflammation occurs because “viruses or bacteria may invade muscle tissue directly, or release substances that damage muscle fibers.”

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