Dermatropin can be rubbed externally on the anus. Diyanping is a corticosteroid drug, with anti-inflammatory, anti-allergic and anti-itching effect, on the local inflammatory reaction caused by fever, redness and swelling, has a very good therapeutic effect. If there is perianal itching, redness and swelling, dermatophyte can be treated, because it is a hormonal drug, after applying it can achieve the therapeutic effect of stopping itching in a short period of time. The emergence of perianal discomfort, it is best to try to rule out the cause, because perianal itching may be due to hemorrhoids lead to localized moisture in the anus, which irritates the skin and produces itching. If it is the case that you should treat the hemorrhoids first, rather than using dermatophyte treatment, the hemorrhoids will not itch if they are treated. Dermatoprost is able to rub the anus, but need to diagnose the cause of the disease, symptomatic use of drugs, dermatoprost belongs to the hormone class of drugs, can not be used for a long time.