Daylight photodynamic therapy in 25 patients with actinic keratosis and evaluation of efficacy by confocal microscopy.

Background: Daylight photodynamic therapy (PDT) has been reported as having similar efficacy to conventional photodynamic therapy in actinic keratosis treatment.

Methods: 25 patients with actinic keratosis of the scalp and/or face were submitted to a daylight photodynamic therapy session. Adverse reactions were evaluated after one week and efficacy after 3 months.