ACR Criteria for the Classification of Hypersensitivity Vasculitis

Three of the following five criteria were required to meet American College of Rheumatology (ACR) classification criteria for hypersensitivity vasculitis:

  1. Age at disease onset older than 16 years.
  2. Medication at disease onset as a precipitating factor.
  3. Palpable purpura.
  4. Maculopapular rash.
  5. Biopsy specimen showing granulocytes around an arteriole and venule.

These criteria have a reported sensitivity of 71% and a reported specificity of 83.9% for the classification of hypersensitivity vasculitis compared with other vasculitides.

 

 

References:

  1. Calabrese LH, Michel BA, Bloch DA, Arend WP, Edworthy SM, Fauci AS, et al. The American College of Rheumatology 1990 criteria for the classification of hypersensitivity vasculitis. Arthritis Rheum. 1990;33:1108-13.[Medline]

Created: May 29, 2005

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