Allergic rhinitis in pregnant women is a condition in which some ladies who are usually in good health have increased nasal discharge and blocked nostrils once they become pregnant. In severe cases, they often breathe through their mouths, which makes their mouths dry and affects their sleep. Once the baby is delivered, the symptoms disappear naturally. This kind of rhinitis is medically called rhinitis during pregnancy, or what we call allergic rhinitis in pregnant women. Why are pregnant women prone to rhinitis? This is because women’s nasal mucosa is more sensitive to estrogen. In some women, under the influence of cyclical changes in sex hormones, the nasal mucosa undergoes cyclic bleeding similar to that of the endometrium, which is called compensatory menstruation. As for allergic rhinitis in pregnant women, the increased estrogen level after pregnancy causes a hyperallergic reaction in the nasal mucosa, resulting in dilatation of small blood vessels, edema of the nasal cells, and exuberant secretion of glands, which results in, among other symptoms, nasal congestion, runny nose, and sneezing. Since this symptom occurs during pregnancy and relieves itself after delivery, it is called rhinitis in pregnancy. In fact, the pathological change is the diastolic disorder of blood vessels, and, in addition to pregnancy, rhinitis may be caused whenever there is elevated estrogen, such as during puberty, menstruation, and long-term contraceptive use. Therefore, some people refer to allergic rhinitis in pregnant women also as vasodilatory rhinitis. So how to treat allergic rhinitis in pregnant women? For the symptoms of nasal congestion and runny nose, you can nasal drops of 1% ephedrine solution. However, it should not be used for a long time to avoid failure and can also cause drug rhinitis. If there is purulent nasal discharge, antibiotics can be used. However, it is better not to use antibiotics that damage the auditory nerve such as streptomycin, gentamicin and kanamycin for a long time. If the above treatment is still ineffective, after removing nasal secretions, nasal spray can be used to reduce the degree of local congestion and edema, thus alleviating the symptoms. The above is the allergic rhinitis of pregnant women, I believe that the mother-to-be can eliminate the doubts in their minds after reading, even if the symptoms of allergic rhinitis of pregnant women do not need to worry too much, under the guidance of doctors to regulate can be.