How is septic 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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Acute joint inflammation from JIA needs to be differentiated from septic arthritis, because the 2 disorders may produce a similar clinical picture, with warmth, acute pain, and severely painful range of motion. Although polyarticular symmetrical involvement and distinctive clinical features help to differentiate JIA from pyogenic arthritis, joint aspiration and joint fluid analysis may be indicated.

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