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Article
May 1982

Solar UrticariaDeterminations of Action and Inhibition Spectra

Author Affiliations

From the Department of Dermatology, Kobe University School of Medicine, Japan.

Arch Dermatol. 1982;118(5):346-350. doi:10.1001/archderm.1982.01650170060026
Abstract

• A 42-year-old woman acquired solar urticaria approximately ten minutes after exposure to sunlight. Urticaria developed from visible light emitted from a projector lamp after a similar time lag. Monochromatic rays between 400 and 500 nm induced immediate urticaria by irradiation, with four times the minimal urticarial dose. Urticaria that was induced by monochromatic rays or the projector lamp was completely inhibited by immediate reirradiation of test sites with light waves longer than 530 nm. Radiant heat exposure from an electric hair dryer at 50 °C had no suppressive effects on the development of urticarial lesions.

(Arch Dermatol 1982;118:346-350)

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