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Ultraviolet and Visible Action Spectrum in a Case of Solar Urticaria
Colin A. Ramsay, MB, MRCP;
Rudolph J. Scrimenti, MD;
Derek J. Cripps, MD
Arch Dermatol. 1970;101(5):520-523.
Abstract
A patient with solar urticaria had an action spectrum for immediate erythema and whealing which extended from 250 nm to 460 nm. The delayed erythema action spectrum was normal. Pulse-meter studies indicated that dilatation of cutaneous arterioles occurred with the immediate erythema; no kinins could be detected in the dermal perfusate from the area. The patient received psoralen therapy orally, and increasing exposure to natural sunlight increased his tolerance to sunlight. Monochromatic light tests showed that the minimal dose for whealing on exposed skin increased after treatment.
Author Affiliations
Madison, Wis
From the Department of Dermatology, University of Wisconsin Medical Center, Madison. Dr. Ramsay is now with St. John's Hospital for Diseases of the Skin, London.
Footnotes
Accepted for publication Dec 30, 1969.
Reprint requests to 1300 University Ave, Madison, Wis 53706 (Dr. Cripps).
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