Bursitis is an inflammatory condition that affects small fluid-filled sacs called bursae, which cushion and lubricate the joints, tendons, and muscles. Bursitis can occur in any joint in the body, but it is most common in the shoulder, elbow, hip, and knee. The most common causes of bursitis are overuse, injury, infection, and certain medical conditions such as rheumatoid arthritis and gout. The symptoms of bursitis include pain, stiffness, swelling, and redness around the affected joint. Treatment options for bursitis include rest, ice therapy, medications, laser therapy, shockwave, and in severe cases, surgery. It is important to seek medical attention if you suspect you have bursitis to prevent the condition from worsening and causing permanent damage.