1 to 2 mo often cures uncomplicated tinea pedis. Concomitant topical antifungal use may reduce recurrences. Good foot hygiene is essential. During acute vesicular flare-ups, bullae may be drained at the margin, but the keratinous blister roof should not be removed. Cure with topical treatment is difficult, but control may be obtained with long-term therapy.
Recurrence is common after therapy is discontinued.
This form of onychomycosis is usually caused by Trichophyton sp. Infections of the fingernails are less common than those of the toenails. The nails thicken and become lusterless, and debris accumulates under the free edge. The nail plate becomes thickened and separated, and the nail may be destroyed. Differentiating a Trichophyton infection from psoriasis is particularly important because drug therapy for tinea unguium is specific, and long-term treatment is required.