Photodynamic therapy using aminolaevulinic acid for patients with nonhyperkeratotic actinic keratoses of the face and scalp: phase IV multicentre clinical trial with 12-month follow up

Abstract

ALA-PDT was shown to be an effective and safe therapy for the treatment of AKs of the face and scalp in skin types I-V, with an acceptable rate of recurrence over 12 months of histologically confirmed AKs of 19%. Phototoxicity reactions were all expected, nonserious and had essentially resolved after 1 month post-treatment independent of skin type.