Leukocytoclastic vasculitis in urticaria induced by sun exposure.
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.


METHODS
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.


CONCLUSIONS
In a literature review we found one case of solar urticaria with histologic aspects of leukocytoclastic vasculitis.
Stinco
Giuseppe
G
Department of Clinical and Experimental Pathology and Medicine, Institute of Dermatology, University of Udine, Udine, Italy. giuseppe.stinco@uniud.it
Di Gaetano
Luca
L
Rizzi
Claudio
C
Patrone
Pasquale
P
D000328:Adult; D006801:Humans; D008297:Male; D013472:Sunlight / Q000009:adverse effects*; D014581:Urticaria / Q000209:etiology* / Q000473:pathology; D018366:Vasculitis, Leukocytoclastic, Cutaneous / Q000209:etiology* / Q000473:pathology