Tinea pedis is a very common skin condition caused by a fungal infection, and many people feel that it is difficult to treat and cannot be cured. So why is it difficult to treat tinea pedis? In fact, the main reasons why tinea pedis is difficult to treat are: 1. Irregular treatment and insufficient course of treatment. Many patients use glucocorticoids or antifungal preparations containing glucocorticoids, such as dermatophylline, skin relief, or trimethoprim econazole, topically for a long time, resulting in the condition being covered up and the fungal infection being gradually added; the course of treatment is short and the fungus is not completely removed, which can easily cause drug resistance; 2. Failure to be able to remove triggering factors. Long-term application of glucocorticoids or immunosuppressants, combined with diabetes and other triggers are difficult to be removed. The treatment of tinea pedis should first remove the triggering factors. For example, you should wash your feet regularly, change your socks regularly, disinfect the foot basin regularly, wash your shoes and socks with boiling water or expose them to the sun, avoid sharing slippers and bath towels with others, keep your feet dry and ventilated, and wear more cloth shoes and sandals in summer. The treatment of tinea pedis starts with local treatment, which varies from one type to another. 1.Papular scaly, hyperkeratotic type of tinea pedis: you can apply antifungal ointment or cream (such as naftifine ketoconazole cream, sertaconazole cream, terbinafine cream, econazole cream, boutinafine cream, bifenazole cream, clotrimazole cream, miconazole nitrate cream, etc.). 2, impregnated erosion type foot can first use alum powder or foot powder, and then change to antifungal ointment or cream after the skin dries and peels. 3, blister type foot can be used topically compound salicylic acid tincture, terbinafine spray, compound rezosin application, compound resorcinol coating or antifungal cream. Topical antifungal drugs can significantly eliminate the lesions and relieve symptoms within about 2 weeks, but the fungus is not completely removed, but still exists in the stratum corneum, once the drug is discontinued, it can cause recurrence of the disease, generally need to adhere to the full course of treatment for more than 1 month. If the disease is serious or the effectiveness of topical drugs is not good, oral antifungal drugs (such as itraconazole capsules, terbinafine tablets, etc.) can be taken.