Why does my vulva suddenly itch after sex?

There are many reasons for vulvar itching after intercourse, such as excessive force during sex, causing adverse stimulation and influence, or too little vaginal secretion in women, which can cause abnormal friction between the skin and mucous membranes, which may cause itching symptoms. In addition, if a woman is allergic to semen, it may also cause such symptoms. Therefore, it is necessary to identify the cause so that symptomatic treatment and relief can be provided.

Why does my vulva suddenly itch after sex?

(1) Semen allergy:

The semen of some men can cause allergies in their wives. If the wife has an allergic constitution, she is likely to have an allergic reaction. Allergic people often experience itching in the vulva, and sometimes mild congestion and edema in the vulva. A few cases may cause chest tightness, palpitations, or systemic "wheals".

(2) Leucorrhea allergy:

Women's leucorrhea is composed of cervical fluid mixed with some endometrial and fallopian tube exfoliated cells and vaginal secretions. During sexual intercourse, as cervical fluid and vaginal secretions increase, the amount of leucorrhea will also increase. There are many antigenic substances in leucorrhea that can become allergens. If your husband has an allergic constitution, it will also induce an allergic reaction. Some external contraceptives, such as external contraceptive jelly and external contraceptive films, can also cause allergic reactions and itching of the vulva.

(3) Secretion contamination stimulation:

Some secretions of the reproductive organs during sexual intercourse, such as leucorrhea, semen, menstrual blood, smegma, etc., stick to the vulva and then dry and adhere. Although they do not cause allergic reactions, they can irritate the local skin and mucous membranes, causing itching and discomfort. Obviously, once your vulva becomes itchy after sex, you should look for the cause.

If it is clearly related to allergic factors, for example, one of the couple has allergic constitution and is prone to "urticaria", anti-allergic treatment should be given. If necessary, take appropriate anti-allergic drugs such as chlorpheniramine, vitamin C or diphenhydramine before and after sexual intercourse, or wear condoms to prevent contact with secretions and reduce allergic reactions. If it is clear that the allergy is caused by condoms or external contraceptives, other birth control methods should be used instead. After sexual intercourse, the sexual organs should be cleaned in time, and urination should be done in time or the wife should squat for a while immediately to allow the semen to flow out of the vagina, which can reduce the chance of itching.