Currently there are more brands of sanitary napkins sold on the market, and some of them also contain other additives and may even contain obvious fragrances, etc. Therefore, when women use sanitary napkins, they may have allergic manifestations due to changing brands. When sanitary napkins cause allergies in women, they often cause a local rash on the vulva, and there is also intense itching and even local tingling, so when sanitary napkin allergies cause itching and pain, it is often necessary to immediately stop using such brands of sanitary napkins, or to change the brand of sanitary napkins. Apply comfrey oil cream, or use furnace glycolic lotion for local application to relieve itching symptoms, and women also need to wash their vulva with warm water every day to keep it as clean and dry as possible, so that allergy symptoms can disappear as soon as possible. As sanitary napkins cause allergies in women, often caused by the brand of sanitary napkin, so such women can stop using allergy-causing sanitary napkins or change to cotton sanitary napkins to avoid re-emergence of allergies, the same period to change sanitary napkins, try to keep the vulva dry and clean to prevent vulvar discomfort.