Inflammation of a bursa, which is a small fluid-filled sac that cushions and lubricates areas where tendons, ligaments, and muscles move over bones. This condition causes pain, swelling, and limited movement.
From Latin 'bursa' meaning 'bag' or 'purse' (referring to the sac-like structure) combined with Greek '-itis' (inflammation). The anatomical term bursa was first used in the 17th century, with the inflammatory condition described shortly after.
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