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Updated: Jul 17, 2026

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Published on: October 12, 2012
Leukocytoclastic vasculitis in urticaria induced by sun exposure
Giuseppe Stinco1, Luca Di Gaetano, Claudio Rizzi
1Department of Clinical and Experimental Pathology and Medicine, Institute of Dermatology, University of Udine, Udine, Italy. giuseppe.stinco@uniud.it
Background:
Solar urticaria manifests itself immediately after solar or artificial light exposure and disappears a little later. Histopathologic findings of solar urticaria are essentially identical to those of classic urticaria.
Case Report:
We report a 41-year-old man who developed urticarial lesions some hours after sunlight exposure, which resolved after approximately 1 week. Histologic examination of the lesions evidenced a leukocytoclastic vasculitis.
Conclusion:
In a literature review we found one case of solar urticaria with histologic aspects of leukocytoclastic vasculitis.
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