Continuous activation of PpIX by daylight is as effective as and less painful than conventional photodynamic therapy for actinic keratoses; a randomized, controlled, single‐blinded study

Background Photodynamic therapy (PDT) is a highly effective treatment for actinic keratoses (AK); however, it is time consuming and often painful for the patient. Daylight‐PDT would make the treatment independent of the clinic and less painful due to the continuous activation of small amounts of porphyrins during its formation.

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