Pathogenesis of solar urticaria. Sweat droplet in testing for photosensitivity
W. B. Shelley and C. L. Heaton
It was impossible to replicate solar urticaria lesions by irradiation in
the laboratory, until the role of sweating was recognized. We found that
the sweat droplet, acting as a lens, serves as a photointensifier. As such,
sweat would appear to play a meaningful role in the pathogenesis of
cutaneous photosensitivity reactions, as well as be an adjuvant in
phototesting.
