What is juvenile rheumatoid arthritis (JRA)?

Updated: Jul 25, 2019
  • Author: David D Sherry, MD; Chief Editor: Lawrence K Jung, MD  more...
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Juvenile rheumatoid arthritis (JRA) is the most common chronic rheumatologic disease in children and is one of the most common chronic diseases of childhood. It represents a group of disorders that share the clinical manifestation of chronic joint inflammation.

The etiology is unknown, and the genetic component is complex, making clear distinctions between the various subtypes difficult. As a result, the various sets of classification criteria that have been recognized have different benefits and limitations. A new nomenclature, juvenile idiopathic arthritis (JIA), is being increasingly used in order to better define subgroups.

Go to Osteoarthritis, Pediatric Osteoarthritis, and Rheumatoid Arthritis for complete information on these topics.

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