Which form of arthritis do you have? Arthritis comes in many forms. In fact, this term can apply to a number of conditions, including psoriatic arthritis, rheumatoid arthritis, gout, and osteoarthritis. Two of these conditions--rheumatoid arthritis (RA) and osteoarthritis (OA)--are often confused among patients. But how are they different? In this slideshow, we look at 6 major ways OA and RA differ, including their causes, symptoms, and treatment. 1. They have different causes. OA is... Read More