Itching next to the vagina can be caused by the following reasons: First, it may be caused by vaginitis. When suffering from mycosis fungoides or trichomoniasis, the discharge from the vagina will stimulate the vulva and the skin mucosa next to the vagina causing itching next to the vagina. Secondly, it may be caused by allergy, which is very common in clinical practice. Allergy can also lead to increased vascular permeability, which can stimulate the skin mucosa next to the vagina to produce itchy symptoms, and anti-allergy medication can be given. Thirdly, vulvar dystrophy, when women suffer from vulvar dystrophy, it can cause itching and white spots next to the vagina.