Rice-like rashes at the junction of the anus and vulva are associated with skin allergies, inflammation of follicular tissues, condyloma acuminatum, genital herpes, and so on. The main manifestations are small rice-like granular papules localized in men and women, itching, pain and so on. You need to consult a doctor in time, according to the different causes of the onset of the disease, under the guidance of the doctor can take the following methods of treatment; 1. Inflammation of hair follicle tissue: it is related to wearing too tight underwear, using sanitary napkins for women, causing local airtightness and so on, accompanied by different degrees of itching and pain and so on. You can use povidone-iodine to sterilize the area and apply erythromycin ointment. 2. Acute warts: with unclean sexual intercourse infected with human papilloma virus, the main manifestation of a single or multiple different sizes of small particles raised, the tip of the sharp, itchy, and has a strong contagious, after diagnosis can be laser surgery, local rub imiquimod ointment and other treatments. 3. Skin allergy: related to contact with allergens, manifested as localized skin pimples, itching, redness of the skin and so on. You can apply local dexamethasone cream and take oral loratadine. 4. Genital herpes: localized small granular pimples, small blisters, pain, itching, etc. caused by herpes virus type 2 infection, is a sexually transmitted disease, you can take acyclovir orally and apply acyclovir cream. The anus and vulva connection long rice-like rash need to go to the hospital in time to consult the doctor, clarify the cause of the disease, the cause of the treatment.