Polyarticular Rheumatoid Arthritis
Juvenile rheumatoid arthritis (JRA) is a term used to describe a common type of arthritis in children. It is a long-term (chronic) disease resulting in joint pain and swelling.
Alternative Names
Juvenile chronic polyarthritis; JRA; Still's disease; Juvenile idiopathic arthritis
Causes, incidence, and risk factors
The cause of JRA is not known. It is thought to be an
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