What are the approximate frequencies of the various forms of juvenile rheumatoid arthritis (JRA)?

Updated: Jul 25, 2019
  • Author: David D Sherry, MD; Chief Editor: Lawrence K Jung, MD  more...
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Answer

The approximate frequencies of the various forms of JRA are as follows:

  • Oligoarticular - 30%

  • Polyarticular RF negative - 20%

  • Polyarticular RF positive – 5%

  • Systemic-onset – 5%

  • Psoriatic - 5%

  • Enthesitis Related – 25%

  • Undifferentiated – 10%


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