what causes bursitis elbow
Bursitis is the swelling and irritation of a bursa. A bursa is a fluid-filled sac that acts as a cushion between a muscles, tendons, and bones. Bursitis is often a result of overuse. It can be caused by a change in activity level, such as training for a marathon or by being overweight. Bursitis can also be caused by trauma, rheumatoid arthritis, gout, or infection. Sometimes the cause cannot be found. Bursitis commonly occurs in the shoulder, knee, elbow, and hip. Other areas that may be affected include the Achilles tendon and the foot.
According to WebMD, water on the elbow, or bursitis, is caused by pressure on the bursa, a blow to the elbow or an infection. Of these causes, pressure is the most prevalent. In fact, it is called student's elbow because students lean on their elbows while studying, which puts pressure on the bursa and causes inflammation, according to John Hopkins Medicine.