The most common cause is gynecological inflammation, such as mycosis fungoides, bacterial vaginitis, and trichomoniasis, which can lead to increased leucorrhea causing itchy vulva symptoms. This is especially true for mycotic vaginitis, which is often more obvious. 2. If a woman has cervical disease that leads to increased vaginal discharge, it can also cause itching of the vulva. 3. If a woman has vulvar skin diseases, such as eczema of the vulva or inflammation of the vulvar skin, folliculitis, etc., it can cause itching. 4. It can cause itching.