Polymorphous light eruption (PLE) is a common photodermatosis induced mostly by UV-A (320-400 nm),1- 5 although UV-B (280-320 nm) can also elicit these lesions in certain patients.6 In this study, we compared the efficacy of 2 high sun protection factor (SPF) sunscreens that differed in terms of their range of UV-A protection for preventing experimentally induced PLE.
Allas S, Lui H, Moyal D, Bissonnette R. Comparison of the Ability of 2 Sunscreens to Protect Against Polymorphous Light Eruption Induced by a UV-A/UV-B Metal Halide Lamp. Arch Dermatol. 1999;135(11):1421–1422. doi:10-1001/pubs.Arch Dermatol.-ISSN-0003-987x-135-11-dlt1199