[Treatment of Tinea Pedis in Elderly Patients Using External Preparations].

Infection rate of tinea pedis is high in the elderly, wherein treatment by a dermatologist should be considered to prevent infecting their family members. About 90 percent of cases with tinea pedis is treated only using external preparations. In treating the elderly with tinea pedis using external preparation, we should take into consideration that the elderly have thinner and weaker skin compared to younger people. There are many kinds of dosage form (cream, ointments, lotion, spray, and so on) for external preparations to treat tinea pedis. Generally, liquid forms such as lotions and sprays cause stronger irritation compared to ointments and creams, thus, caution should be taken for side effects when applying them to the elderly. Contact dermatitis is the most frequent side effect of external preparations. Caution should also be taken for the type of additives used. The composition of the preparation should be checked when changing dosage forms, or when switching brand-name drugs to generic drugs. Since the adherence rate of external preparations is low, it is preferable to use those with strong antibacterial activity and only have to be applied once a day.