Arthritis is a form of joint disorder that involves inflammation of one or more joints. There are over 100 different forms of arthritis. The most common form, [[Osteoarthritis (OA)]] (degenerative joint disease), is a result of trauma to the joint, infection of the joint, or age. Other arthritis forms are [[Rheumatoid Arthritis (RA]]), [[Psoriatic Arthritis]], and related autoimmune diseases. [[Septic Arthritis]] is caused by joint infection.
See also :
*[[Joint Pain]]