Pimples on the vulva near the anus are mainly caused by local infections, sexually transmitted diseases such as syphilis, AIDS, genital herpes virus infection, as well as insect bite dermatitis of the vulvar skin, local skin tumors, and local metastases of other genital tumors. A very small number of women may also suffer from severe hemorrhoids, resulting in severe local hyperplasia, which can cause bumps to grow on the vulva near the anus. You also need to be alert for the occurrence of anal fistula, which may lead to granulomas when healing locally, and you will have localized bumps. The actual fact is that you will need to pay attention to the local pain, or redness and swelling, and go to the hospital in time to improve the relevant examination to clarify the specific cause, if necessary, also need to timely biopsy, pay attention to keep the local clean, dry, avoid eating spicy food, etc.