Bursitis refers to the inflammation of a bursa. A bursa is a fluid filled sac that prevents friction between bony surfaces and soft tissues in the body, especially in or around joints. When one of these bursae is inflamed, it becomes swollen and painful.
The inflammation of a bursa may occur as a result of excessive movement or pressure on the bursa, direct impact, infection or other diseases that may affect the joint and its environs (eg. arthritis, gout etc).
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