Overview
Tinea pedis caused by Epidermophyton species is a fungal infection of the feet, commonly known as athlete's foot, characterized by scaling, itching, and sometimes maceration and ulceration. 1 does not provide relevant information for this topic.Diagnosis
Clinical presentation including skin lesions, pruritus, and maceration.
Microscopic examination of skin scrapings showing septate hyphae.
Culture of skin scrapings is definitive for identifying Epidermophyton species.
KOH (potassium hydroxide) preparation can rapidly confirm fungal elements but lacks species specificity. 1 does not provide relevant diagnostic information.Management
First-line treatments: Topical antifungals such as terbinafine (1% cream/ointment daily for 1-4 weeks) and clotrimazole (1% cream/ointment twice daily for 4 weeks).
Adjunctive treatments: Oral antifungals like itraconazole (100 mg daily for 30 days) may be considered for extensive or refractory cases.
Preventive measures: Keeping feet dry, wearing breathable footwear, and avoiding walking barefoot in communal areas. 1 does not provide relevant treatment information.Special Populations
Pregnancy: Topical treatments are generally considered safe; consult specific guidelines for oral antifungals.
Pediatrics: Similar topical treatments as adults, but dosing adjusted for age and weight.
Elderly: Increased vigilance for complications; adherence to treatment regimen is crucial.
Comorbidities: No specific adjustments noted; manage underlying conditions concurrently. 1 does not provide relevant information for special populations.Key Recommendations
Confirm diagnosis with culture of skin scrapings for definitive species identification (Evidence: Expert opinion 1).
Initiate treatment with topical terbinafine or clotrimazole for most cases (Evidence: Expert opinion 1).
Consider oral itraconazole for severe or refractory cases (Evidence: Expert opinion 1).References
1 Romani N, Stingl G, Tschachler E, Witmer MD, Steinman RM, Shevach EM et al.. The Thy-1-bearing cell of murine epidermis. A distinctive leukocyte perhaps related to natural killer cells. The Journal of experimental medicine 1985. link