Rheumatoid Arthritis or RA is a disease of the joints. Rheumatoid arthritis is the most common form of autoimmune arthritis. RA is characterized as an autoimmune disease because a patient with RA’s immune system attacks the joint tissues for unknown reasons.
RA is most common in the wrists and fingers and is known to affect women more often than men. Symptoms usually develop around the age of thirty. The disease can be present for a short time or come and go. The most severe forms of rheumatoid arthritis last a lifetime.