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Ultraviolet light is an environmental factor aggravating facial lesions of adult atopic dermatitis
H Deguchi1, N Umemoto, H Sugiura
1Department of Dermatology, Shiga University of Medical Science, Seta, Tsukinowa-Cho, 520-21, Japan.
Abstract:
An increasing number of adult patients with atopic dermatitis (AD) in Japan are distressed by persistent eczematous lesions of the face (so-called atopic red face). Phototests were carried out in 28 patients with the atopic red face to test a possibility that ultraviolet (UV) light could be an aggravating factor. Contact and photocontact dermatitis had been ruled out by repeated patch and photopatch tests. All of the patients had a normal response to a screening dose of UVA (10 J/sq cm) and a normal minimal erythema dose (MED) of UVB. Ten of these patients, however, showed an abnormal papular response to a single or 3-times consecutive UVB radiation above the MED (90 mJ/sq cm).
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