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Updated: May 27, 2026

Investigation of a Blue Light LED Device to Suppress Wound Pathogens Using a Collagen-Based Synthetic Skin Model
Published on: February 24, 2026
Severe cutaneous reaction to photodynamic therapy with blue light
Mary M Moore1, Cindy Reyna, Richard H Hope
1Department of Dermatology, Texas Tech University Health Sciences Center, Lubbock, TX, USA.
Abstract:
Photodynamic therapy (PDT) has been considered a safe and efficacious treatment for actinic keratoses (AKs) of the scalp and face. The procedure involves exposing a patient to a blue light source 1-4 hours after application of photosensitizing aminolevulinic acid (ALA) at a dose of 10 J/cm2 for up to 1000 seconds.(1,2) We suggest that amount of exposure time and area of exposure should be stratified according to baseline photodamage.
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