Which procedures are indicated in the workup of urticarial vasculitis?

Updated: Sep 16, 2020
  • Author: Darius Mehregan, MD; Chief Editor: Dirk M Elston, MD  more...
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Perform skin biopsy to confirm the diagnosis of urticarial vasculitis. Recent lesions, less than 48 hours in onset, are the best for biopsy. Biopsy of a lesion of less than 24 hours' duration is best for direct immunofluorescence.

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