What is macrophage activation syndrome as it relates to juvenile idiopathic arthritis (JIA)?

Updated: Feb 07, 2020
  • Author: Howard R Smith, MD; Chief Editor: Herbert S Diamond, MD  more...
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Macrophage activation syndrome is a life-threatening complication of juvenile idiopathic arthritis (JIA) that necessitates immediate treatment with high-dose steroids and cyclosporine. (See Complications.)

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