Itchy perineum may be caused by bad living habits, infectious diseases, eczema and warts. 1. Bad living habits: If patients wear chemical fiber underwear for a long time, use alkaline laundry detergent and substandard sanitary napkins, etc., it may lead to itchy vulvar skin. 2. Infectious diseases: If you suffer from gynecological infectious diseases such as vaginitis, cervicitis, vulvitis, etc., the stimulation of inflammation will cause itching of the skin, which is often accompanied by an increase in secretions. 3. Eczema: Eczema of the vulva or perianal area due to mental factors, hygiene factors, immune factors, etc. can cause intense itching, pimples and blisters in the perineum. 4. Condyloma acuminatum: If the perineum itches and has small particles, it may be condyloma acuminatum caused by human papilloma virus infection. Clinical manifestations of increased vaginal discharge, and in the junction of the skin and mucous membrane, cauliflower warts, uneven surface, or accompanied by erosion, pus and local itching. If you are experiencing perineal itching symptoms, you should go to the hospital to have a relevant examination and get a clear picture of the cause of the disease under the guidance of the doctor.