Rheumatoid arthritis (RA) is an autoimmune disease that causes pain, swelling, stiffness, and loss of function in the joints. RA usually affects the same joint on both sides of the body. More
Find answers in our in-depth report on RA:
In her own words: living with rheumatoid arthritis
Read about one woman's experience with this condition.
The American College of Rheumatology
The Arthritis Foundation
The National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)