What Causes Joint Pain?

Bursitis

Bones are protected by a layer of cartilage, but that's not the only cushioning that exists. There are also bursae, which are small sacs filled with fluid. They provide cushioning for the muscles, tendons, and bones that make up joints. Bursitis, which occurs when the bursae become inflamed, commonly causes hip, elbow, and shoulder pain though it's also possible for bursae by the base of the big toe, heel, and knee to become inflamed. Treatment for an inflamed bursa involves protecting the joint from additional trauma and resting it. The majority of bursitis pain should go away after a few weeks, but it's common for multiple flareups to happen throughout an individual's life. Bursitis can cause stiffness, aching, swelling, and redness in and around the joint. The joint pain might also intensify when patients move the affected joint or press their fingers against it. Patients should talk to a doctor if the joint is immobile or the pain is disabling.