What is the mechanism of action for corticosteroids in the treatment of acute urticaria (hives)?

Updated: Mar 21, 2018
  • Author: Henry K Wong, MD, PhD; Chief Editor: Michael A Kaliner, MD  more...
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Corticosteroids stabilize mast cell membranes and inhibit further histamine release, as well as reduce the inflammatory effect of histamine and other mediators. The efficacy of corticosteroids in acute urticaria remains controversial. In one study, acute urticaria improved more quickly in the group treated with prednisone than in the group treated with placebo. [54]

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