Modification of experimental UV erythema by external steroids--a reflex photometric study.

A method for reflex photometric detection of the modification of a model of inflammation (UV erythema) by external corticoids is presented. The steroids which most effectively suppress erythema formation are those which have the strongest vasoconstrictor potency also on unchanged skin. A tachyphylaxis phenomenon can also be demonstrated after several applications of a synthetic steroid to the inflammation model.