Acid hydrolases in blister fluid. 5. Influence of ultraviolet radiation in patients with polymorphic light eruption.

The minimal erythema dose for chronic polymorphic light eruption (CPLE) patients was significantly reduced for UV-B rays. However, following doses which produced comparable erythema, no significant differences were found in the release of acid hydrolases between CPLE patients and controls. An increased release of acid hydrolases was found to accompany the formation of papular lesions. Increased enzyme activity was first observed some hours after the appearance of the erythema.