What is the urticaria activity score (UAS) and how is it used in the evaluation of (hives)?

Updated: Mar 21, 2018
  • Author: Henry K Wong, MD, PhD; Chief Editor: Michael A Kaliner, MD  more...
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The 2013 EAACI/GA2LEN/EDF/WAO diagnosis guideline recommends using the urticaria activity score (UAS) proposed in the previous version of the guideline to measure disease severity and monitor treatment results in daily practice. The UAS assigns a score from 0 (no disease activity) to 3 (intense activity) for each of the 2 key urticaria symptoms, wheals and pruritus. The sum of the scores represents disease severity on a scale from 0 (minimum) to 6 (maximum). [76, 45]

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