How is postinfectious arthritis differentiated from juvenile idiopathic arthritis (JIA)?

Updated: Jul 25, 2019
  • Author: David D Sherry, MD; Chief Editor: Lawrence K Jung, MD  more...
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Postinfectious arthritis typically affects large joints. This syndrome is clinically indistinguishable from the early phase of JIA, particularly because onset of JIA may be triggered by viral infections; a duration of longer than 6 weeks eventually differentiates JIA.

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