autoimmune

Juvenile idiopathic arthritis

Juvenile (JIA), also known as juvenile arthritis and formerly known as juvenile arthritis (JRA), is the most common rheumatic disease of childhood, affecting approximately 3.8 to 400 out of 100,000 children. Juvenile refers to disease onset before 16 years of age, while idiopathic refers to a condition with no defined cause, and arthritis is within the joint.

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Outlook

· = 3.8-400 in 100,000

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Plain-language summary adapted from Wikipedia. Not medical advice.