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The Time Course of UVB and UVC Erythema

1988; Elsevier BV; Volume: 91; Issue: 5 Linguagem: Inglês

10.1111/1523-1747.ep12476577

1523-1747

P.M. Farr, Julian Besag, Brian Diffey,

Psoriasis: Treatment and Pathogenesis

The time course of ultraviolet erythema was measured using six different exposure doses of UVC and UVB radiation in each of eight adult subjects. The intensity of erythema was measured by reflectance spectrophotometry at 4, 8, 24, 36, and 48 h after irradiation. In five subjects there was no significant difference between the form of the UVB and UVC erythema time-course. In three subjects a significant difference was observed, but this was random rather than systematic between subjects. The results do not confirm the previously reported major differences in time course between the two qualities of radiation.