Urticarial vasculitis represents 5% to 10% of cases of chronic urticaria, characterized histologically by the presence of vasculitis on skin biopsy. Clinically it tends to last longer than ...

immune complex vasculitis, 4; thyroid disease, 2; Wells' eosinophilic cellulitis, 2; glomerulonephritis and sarcoidosis, 1 each. The skin lesions varied from urticarial papules and plaques to ...

Urticarial Vasculitis or Chronic Spontaneous Urticaria? Telling the Difference Without clear guidelines and diagnostic criteria, clinicians have often been flying blind in attempting to ...