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Topical photodynamic therapy for localized scleroderma
S Karrer1, C Abels, M Landthaler
1Department of Dermatology, University of Regensburg, Germany.
Abstract:
Therapy of localized scleroderma is unsatisfactory, with numerous treatments being used that have only limited success or considerable side-effects. The aim of this trial was to determine whether topical photodynamic therapy would be effective in patients with localized scleroderma. Five patients with progressive disease, in whom conventional therapies had failed, were treated by application of a gel containing 3% 5-aminolevulinic acid followed by irradiation with an incoherent lamp (40 mW/cm2, 10 J/cm2). The treatment was performed once or twice weekly for 3-6 months. In all patients the therapy was highly effective for sclerotic plaques, as measured by a quantitative durometer score and a clinical skin score. The only side-effect was a transient hyperpigmentation of the treated lesions. These cases document the beneficial effect of topical photodynamic therapy in localized scleroderma. Controlled trials are now necessary to confirm these preliminary results.
Insights
Topical photodynamic therapy (PDT) shows promise for treating localized scleroderma when conventional methods fail. This therapy effectively reduced sclerotic plaques with minimal side effects, warranting further investigation.
Area of Science:
- Dermatology
- Photomedicine
Background:
- Localized scleroderma treatment remains challenging, with existing therapies offering limited efficacy and significant side effects.
- Novel therapeutic approaches are needed for progressive localized scleroderma.
Purpose of the Study:
- To evaluate the effectiveness of topical photodynamic therapy (PDT) for localized scleroderma.
- To assess PDT as a treatment option for patients unresponsive to conventional therapies.
Main Methods:
- A pilot study involving five patients with progressive localized scleroderma.
- Treatment involved topical 5-aminolevulinic acid gel followed by incoherent lamp irradiation.
- Therapy was administered once or twice weekly for 3-6 months.
Main Results:
- All patients demonstrated high effectiveness in treating sclerotic plaques, confirmed by durometer and clinical skin scores.
- The only reported side effect was transient hyperpigmentation of treated areas.
- No significant adverse events were observed.
Conclusions:
- Topical photodynamic therapy is a potentially beneficial treatment for localized scleroderma.
- Preliminary findings suggest PDT is effective and well-tolerated.
- Further controlled clinical trials are required to validate these results.