Rheumatoid arthritis (RA) is an ongoing (chronic) disease. It is an autoimmune disease. This means your immune system attacks the lining of your joints causing pain, stiffness, tenderness and swelling. Overtime, it also damages your cartilage and bones. You can help control symptoms of RA with medicine, exercise, and a healthy lifestyle. It doesn't have to keep you from being active. Make sure to see your doctor for scheduled checkups and blood tests. You should see a rheumatologist as soon as possible. This is a doctor who specializes in arthritis and related diseases. Early treatment by this specialist can help prevent or decrease joint damage.