Rheumatoid arthritis (RA) is an autoimmune disease that can cause joint pain and damage throughout your body. The joint damage that RA causes usually happens on both sides of your body. So if a joint is affected in one of your arms or legs, the same joint in the other arm or leg will probably be affected, too.
RA symptoms, which can occur throughout the body, include:
1. Joint Pain
2. Joint Swelling
3. Joint Stiffness
4. Loss of joint function