table of contents
Etiology
- Caused by dermatophyte fungi (Trichophyton species most common)
- Transmission through direct contact or fomites (e.g., contaminated floors/towels)
Clinical Presentation
| Symptom | Characteristics |
|---|---|
| Erythema | Red patches between toes/plantar surface |
| Scaling | Fine white skin peeling |
| Fissures | Painful cracks in skin folds |
| Vesicles | Fluid-filled blisters (acute cases) |
| Pruritus | Mild to severe itching |
Diagnostic Confirmation
- KOH Preparation: Skin scrapings examined under microscope
- Fungal culture (for refractory cases)
Treatment Protocol
Topical Therapy
- Potassium permanganate soak
Concentration: 1:10,000 solution
Duration: 15 minutes daily × 5 days - Cophenythion Cream
Application: BID × 14 days
Coverage: Extend 2cm beyond visible lesions
Systemic Therapy (Severe Cases)
- Itraconazole
Dosage: 200 mg PO BID (2 capsules/dose)
Duration: 1-2 weeks based on response
Key Prevention Measures
- Foot hygiene: Thorough drying of interdigital spaces
- Antifungal powder for high-risk individuals
- Avoid occlusive footwear >4 hours continuously
Clinical Note: Reassess after 2 weeks. Consider alternate diagnosis (e.g., contact dermatitis, psoriasis) if no improvement despite compliance.