Usefulness of Photodynamic Therapy in the Management of Onychomycosis

Area of Science:

• Dermatology
• Mycology
• Photomedicine

Background:

• Onychomycosis is a common fungal nail infection with limited treatment options.
• Current treatments are often lengthy, ineffective, and systemic antifungals carry adverse effects.
• Photodynamic therapy (PDT) is explored as a potential alternative for superficial infections.

Purpose of the Study:

• To review the efficacy of PDT in treating onychomycosis.
• To discuss photosensitizing agents and their limitations in PDT for nail fungus.
• To propose an optimized PDT protocol for onychomycosis.

Main Methods:

• Literature review of in vitro and in vivo studies on PDT for onychomycosis.
• Analysis of cure rates using different photosensitizers like methylene blue and 5-aminolevulinic acid.
• Proposal of a treatment protocol involving methyl aminolevulinate, urea, and red light.

Main Results:

• In vivo studies reported 80% cure rates with methylene blue and 43% with 5-aminolevulinic acid at 12 months.
• The proposed protocol includes 3 PDT sessions with methyl aminolevulinate and red light.
• Pre-treatment with topical urea 40% is part of the proposed protocol.

Conclusions:

• PDT shows potential as an effective treatment for onychomycosis.
• Further clinical trials are necessary to refine PDT protocols and patient selection.
• Optimized PDT could offer a viable alternative to current onychomycosis treatments.