Which skin conditions is Ameluz (5-aminolevulinic acid) gel indicated to treat in adults?

Ameluz (5-aminolevulinic acid) gel treats mild-to-moderate actinic keratosis (Olsen grades 1–2), field cancerization, and superficial and/or nodular basal cell carcinoma unsuitable for surgery because of possible treatment-related morbidity and/or poor cosmetic outcome in adults.