Rheumatoid arthritis (RA) is an autoimmune disease in which the body's immune systemCLOSE Immune system: the body’s natural defense mechanism that responds to infection, injury, and diseases. It can also help heal damaged tissues. attacks joint tissue, causing inflammation of the joint lining. What does that mean for you? Joint pain, stiffness, and sometimes even loss of normal movement. Read on to learn more about the symptoms, causes, and diagnosis of RA.
RA is 2-3x more common in women than in men
Almost half of all people with RA have stopped participating in certain activities*