Efficacy of 3 different light doses in the treatment of actinic keratosis with 5-aminolevulinic acid photodynamic therapy: A randomized, observer-blinded, intrapatient, comparison study

Our results indicate that a red light dose of 70 J/cm2 may be sufficient for effective topical ALA-PDT of disseminated, mild to moderate AK on the face and scalp.