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Introduction & Objectives: Treatment with daylight photodynamic therapy (dPDT) of actinic keratosis (AK) is associated with local skin reactions (LSR), which may affect patients’ quality of life and treatment acceptability. This study explores the potential of a prebiotic and panthenol-containing Dermocosmetic Cream (DC) to enhance tolerance and mitigate post-dPDT induced LSR in the treatment of AKs. Materials & Methods: This randomized controlled, intra-individual trial included 20 patients with ≥10 AKs in two symmetrical areas on their face or décolleté, treated with a single session of artificial dPDT. After treatment, the two areas were randomized to DC twice daily for 14 days or No-DC. Primary outcomes included clinical signs of LSR graded from 0=none to 3=severe, calculated as a composite score, and assessed on Days 2, 7, 14, and 30 post-treatment, along with AK clearance rate. Secondary outcomes encompassed objectively measured erythema, and clinical and objective skin photoaging assessment. Results: Topical application of DC following dPDT significantly improved post-treatment tolerance up to two weeks. By Day 2, DC-treated skin had milder LSR (median 3.0, IQR 2.0-4.8) compared to No-DC skin (median 4.0, IQR 3.0-5.0; p=0.011). This improvement continued on Day 7 (DC median 3.0, IQR 2.0-3.8 vs. No-DC median 4.5, IQR 3.0-5.8; p |
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