Rheumatoid arthritis

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 the 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. This is one way that doctors distinguish RA from other forms of arthritis, such as osteoarthritis (OA).

Treatments work best when RA is diagnosed early, so it’s important to learn the signs. Read on to learn everything you want to know about RA, from types and symptoms to home remedies, diets, and other treatments.