Skin temperature changes induced by UV irradiation at 254 nm and 300 nm

Skin temperatures 24 h after irradiation at both 254 and 300 nm have been examined using the technique of thermography. Increases in skin temperature have been recorded at both wavelengths but the magnitude of these differences after 254 nm irradiation is influenced by the ambient temperature. The apparent disagreement between two groups of observers working in the field of UV erythema may well have been explained.