Terbinafine Treatment for Athlete's Foot

Introduction to Terbinafine Treatment

The American Academy of Pediatrics recommends oral terbinafine 250 mg once daily for 1-2 weeks as the systemic treatment for athlete's foot, while topical terbinafine 1% cream applied once daily for 1 week is highly effective for localized disease 1

Oral terbinafine 250 mg once daily for 1-2 weeks achieves mycological cure rates of 80-90%, which is significantly superior to longer courses of other antifungals 1
The 1-week regimen has similar efficacy to 4 weeks of clotrimazole 1% cream twice daily, but with faster clinical resolution 1
Terbinafine shows similar mycological efficacy to itraconazole 100 mg daily over 2 weeks, but may have slightly lower relapse rates 1

The British Association of Dermatologists indicates that oral therapy is indicated for chronic "moccasin-type" tinea pedis, extensive disease involving multiple areas of the foot, and failed topical therapy 2
The American Academy of Pediatrics suggests that ciclopirox achieves approximately 60% clinical and mycological cure at end of treatment and 85% two weeks after completion 1

The British Association of Dermatologists recommends obtaining baseline liver function tests and complete blood count before initiating oral terbinafine, particularly in patients with history of heavy alcohol consumption, hepatitis, or haematological abnormalities 2
The British Association of Dermatologists warns that liver failure, taste disturbance, and smell disturbance can occur with oral terbinafine, and that the drug is contraindicated in patients with active or chronic liver disease 2, 3

The American Academy of Pediatrics recommends thorough drying between toes after showers, daily sock changes, periodic cleaning of athletic footwear, and foot powder use after bathing to prevent tinea pedis 1

The British Association of Dermatologists notes that terbinafine has minimal drug-drug interactions compared to azole antifungals 2, 3

For patients with tinea capitis, the British Journal of Dermatology recommends terbinafine dosing based on body weight: 62.5 mg daily for patients under 20 kg, 125 mg daily for patients between 20-40 kg, and 250 mg daily for patients over 40 kg, for 2-4 weeks 4
The American Academy of Dermatology suggests that terbinafine is highly effective against Trichophyton species, but less effective against Microsporum species, and treatment selection should be guided by the causative organism or local epidemiology 4

For patients with tinea pedis, terbinafine 250 mg daily for 1-2 weeks achieves mycological cure rates of 80-90%, representing a significantly shorter treatment duration compared to other systemic antifungals, according to the British Journal of Dermatology 5

The National Institute for Health and Care Excellence recommends baseline monitoring for patients with heavy alcohol consumption, pre-existing liver disease, or history of hepatitis before starting terbinafine treatment 5

If treatment fails, the British Journal of Dermatology suggests considering non-compliance, relative insensitivity of the organism, or reinfection, and adjusting treatment accordingly 4
If clinical improvement occurs but mycology remains positive, the British Journal of Dermatology recommends continuing therapy for an additional 2-4 weeks 4