There are many different causes of bursitis, but the most common type is caused by wear-and-tear changes and repetitive movements of the muscles and tendons as they slide through the bursa sac. For example, bursitis in the shoulder can happen after overdoing your activities around the house on the weekend. This can make it very painful just to lift your arm above your shoulder.
An injury can also cause inflammation of the area and pain on movement. Your doctor can make sure no other causes, such as infection, are present that need specific treatment.
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