Polyarticular Arthritis includes swelling pain in five or more joints

Similar symptoms include pain, stiffness, or swelling of the affected joints. Pauciarticular Juvenile Rheumatoid Arthritis affects four or less joints. Polyarticular Arthritis includes swelling pain in five or more joints. There are several forms of Juvenile Rheumatoid Arthritis. This is an Immune Deficiency Syndrome/Autoimmune reaction where antibodies develop against components of joint tissue and begin to attack the joints within the child's own body. Research indicates the body's inability to differentiate foreign invaders from the body's own tissue. It is not clear what causes Rheumatoid Arthritis in children. The most prevalent is Juvenile Rheumatoid Arthritis that affects approximately 75,000 children between 6 months and 16 years of age. Different forms of arthritis, usually linked to other conditions, afflict nearly 285,000 children in the United States.