White skin around the anus may be caused by fungal infection, perianal eczema, ringworm, vitiligo and other diseases, which can be controlled by medication, surgery and other treatments. 1. Fungal infection: white skin around the anus may be a fungal infection, you can use potassium permanganate diluted solution for rinsing, you can also use econazole nitrate cream, terbinafine hydrochloride cream, etc. for local application treatment. 2. Perianal eczema: patients generally manifested as perianal skin moist hypertrophy, accompanied by itching symptoms. Its treatment is mainly based on topical drugs, commonly used drugs are tacrolimus ointment, pimecrolimus cream and so on. 3. Ringworm: most of the ringworm is erythema, but after the flaking may make the pigment lack, make the perianal skin white. Patients can use miconazole nitrate cream, tretinoin econazole cream and other drugs for treatment. 4. Vitiligo: will produce symptoms in the pubic area and perianal mucous membrane area, manifested as a piece or several pieces of white spots of different sizes, may be related to autoimmune system diseases, genetics and so on. Patients can take oral prednisone, topical tacrolimus ointment, carboplatinol ointment, etc. Severe patients can be given surgical treatment, such as skin transplantation. Or other treatment measures, such as phototherapy. Found that the skin around the anus becomes white, it is recommended that patients go to the hospital in time, please ask the doctor to clarify the cause of the disease, and then carry out the appropriate treatment. The above medication must be used under the guidance of a doctor, and should not be abused on its own.