Way2Cure

Health A-Z

What is bursitis?

Bursitis is painful swelling in a small, fluid-filled sac called a bursa. Bursae (the plural of bursa) cushion spaces around bones and other tissue. They’re like bubble wrap that protects structures throughout your body. Bursae cushion the spaces between bones and your:

Bursitis happens when a bursa becomes irritated and swells. The most common causes of bursitis are overuse and putting too much pressure on a bursa. The pain from an inflamed bursa may develop suddenly or build up over time.