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How do doctors classify juvenile rheumatoid arthritis (JRA)?

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Doctors classify three kinds of juvenile rheumatoid arthritis (JRA), based on the number of joints involved, the symptoms, and the presence of certain antibodies (special proteins made by the immune system) in the blood. These classifications help describe how the disease will progress.

SOURCE: 

National Institute of Arthritis and Musculoskeletal and Skin Diseases.

Reviewed by David Zelman on January 30, 2019

SOURCE: 

National Institute of Arthritis and Musculoskeletal and Skin Diseases.

Reviewed by David Zelman on January 30, 2019

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What are the three types of juvenile rheumatoid arthritis (JRA)?

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