Bursitis is the inflammation or irritation of the bursa, a fluid-filled sac located between bone, muscle, tendons, and skin, that decreases rubbing, friction, and irritation. It is most often caused by repetitive, minor impact on the area, or from a sudden, more serious injury, and most often is found in elbows, shoulders, hips, knees, and the Achilles tendon. Bursitis, which is painful, is more common in people over 40. It is treated by avoiding aggravating activities, resting, icing the injury, and taking over-the-counter anti-inflammatory medicines.
Bursitis Diagnosis, Treatment, and Prevention
WebMD's guide to the diagnosis, treatment, and prevention of bursitis.
The Symptoms of Bursitis
Learn about the symptoms of bursitis.
An Overview of Knee Pain
Knee pain is one of the most common complaints heard by doctors. Learn all about knee pain, including what you can do for yours.
What Is Bursitis?
Find out why pain, swelling, and tenderness in one of your joints could be a sign of a condition called bursitis.
Slideshows & Images
Slideshow: Visual Guide to Bursitis
Is that just a sore shoulder? Or could it be inflamed bursae in your joint? Take a look at the symptoms of bursitis and find out how you can treat the pain.
What Is My Rotator Cuff?
Your shoulder does a lot of important things you might take for granted. Learn more about what your rotator cuff does and what may be making it hurt.