Women’s vulvar private place grew a bag first go to the hospital for examination, if not painful and itchy may be cysts, cysts are generally benign tumors, not much impact on the body, you can observe to see the temporary no treatment, significantly larger can be surgically removed. If the local itching, pain, redness and swelling, it may be folliculitis or boils, you can use topical Pepto-Bismol and other drugs, you can also take oral antibiotics. If the localized symptoms of pus, it is best to timely surgical excision, can also be Bach’s gland cysts, Bach’s gland cysts also need to be treated by surgery to be completely cured. Excluding the above reasons may be have unclean sex caused by syphilis, syphilis infection will cause localized hard chancre, usually painless and itchy. It is best to go to the hospital to draw blood to check the syphilis antibody, after determining the infection of syphilis, you need to use penicillin under the guidance of the doctor reasonable treatment.