Polymorphic light eruption (PLE) is possibly the most common chronic skin disorder in people living in temperate climes. Self-report questionnairesurveys suggest a prevalence of about 15% in the northern hemisphere.1 It is therefore appropriate that the current research programs of some specialist centers include a reassessment of this disease,including its cause and diagnosis.
Rhodes LE. Polymorphic Light Eruption Reassessed. Arch Dermatol. 2004;140(3):351-352. doi:10.1001/archderm.140.3.351