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Published on: June 6, 2025
Onychomycosis
Oliverio Welsh1, Lucio Vera-Cabrera, Esperanza Welsh
1Department of Dermatology, Dr. Jose Eleuterio Gonzalez University Hospital, Avenida Francisco I. Madero y Avenida Gonzalitos s/n, Colonia Mitras Centro, Monterrey, Nuevo Leon 64460, Mexico. owelsh@yahoo.com
Abstract:
Onychomycosis is a frequent nail disease caused by dermatophytes, yeasts, and nondermatophyte molds. Trichophyton rubrum, T mentagrophytes, and Epidermophyton floccosum are the most common etiologic agents worldwide. Candida spp are the most frequent among the yeasts. Diagnosis is corroborated by direct microscopic examination, culture, and histomycology with periodic acid-Schiff stain. Other new methods of diagnosis are discussed. Treatment is based on oral antifungals: terbinafine, itraconazole, and fluconazole, including other emerging triazole drugs. Therapeutic outcome with ciclopirox and amorolfine lacquers alone and combined with systemic therapy are also reviewed, as well as the new nail enhancers and physical and chemical removal of the diseased nails.
Insights
Onychomycosis, a common nail fungal infection, is diagnosed via microscopy and culture. Treatment involves oral antifungals and topical therapies for effective nail health restoration.
Area of Science:
- Dermatology
- Mycology
- Infectious Diseases
Background:
- Onychomycosis is a prevalent nail condition caused by various fungi, including dermatophytes, yeasts, and molds.
- Common culprits include Trichophyton rubrum, Trichophyton mentagrophytes, Epidermophyton floccosum, and Candida species.
Purpose of the Study:
- To review current diagnostic methods for onychomycosis.
- To discuss established and emerging therapeutic strategies for fungal nail infections.
Main Methods:
- Diagnosis confirmed by direct microscopy, fungal culture, and histopathology using periodic acid-Schiff stain.
- Evaluation of oral antifungal agents such as terbinafine, itraconazole, and fluconazole.
- Review of topical treatments including ciclopirox and amorolfine lacquers, alone or in combination with systemic therapy.
Main Results:
- Established diagnostic techniques provide reliable identification of causative fungal agents.
- Oral antifungals remain a cornerstone of treatment, with newer triazole drugs showing promise.
- Topical therapies and adjunctive treatments like nail removal enhance therapeutic outcomes.
Conclusions:
- Accurate diagnosis is crucial for effective onychomycosis management.
- A combination of systemic and topical treatments, alongside nail care, offers the best approach for clearing fungal nail infections.
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