Classification of Juvenile Arthritis
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There used to be two ways to classify juvenile arthritis. There was the European classification of juvenile chronic arthritis (JCA). And there was the American classification of juvenile rheumatoid arthritis (JRA). Each system used different categories. This made it hard to use European and American research findings and treatment guidelines together.
To improve research and treatment, the International League of Associations for Rheumatology (ILAR) has devised a set of international criteria that uses the term "juvenile idiopathic arthritis" (JIA). The word "idiopathic" means "of unknown cause." This approach is now used by most researchers and health professionals.
The table below summarizes the three systems.
|Organization||Classification||Length of illness before diagnosis|
|International League of Associations for Rheumatology||Juvenile idiopathic arthritis (JIA)
|American College of Rheumatology||Juvenile rheumatoid arthritis (JRA)
JRA does not include similar types of childhood arthritis (juvenile ankylosing spondylitis, juvenile psoriatic arthritis).
|European League Against Rheumatism||
Juvenile chronic arthritis (JCA)
No matter the classification, children who have symptoms before age 16 are said to have juvenile arthritis.
Primary Medical Reviewer Susan C. Kim, MD - Pediatrics
E. Gregory Thompson, MD - Internal Medicine
Martin J. Gabica, MD - Family Medicine
Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer John Pope, MD - Pediatrics
Current as ofOctober 10, 2017
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