Allergic rhinitis is a common respiratory allergy, especially hay fever. Hay fever is a seasonal allergy, which is caused by pollen scattered in the air by grass and trees in spring and seeds in autumn. Another kind of allergic rhinitis is perennial, and its allergens mainly include dust, animals and microorganisms. Other substances that may cause respiratory allergies include perfume, cigarettes, cigars and smoke from factories.

Drug therapy: 1. Antihistamine preparations: such as astemizole, chlorpheniramine, cisplatin, azatadine (budesonide) and cetirizine-terferadine. The above drugs have almost no side effects such as drowsiness. Ketotifen and others have the side effects of drowsiness. 2. Cell membrane stabilizer: It mainly controls the receptors on the cell membrane and prevents the release of inflammatory substances. The main drugs, such as sodium cromoglycate and sodium nidol (200 times as much as sodium cromoglycate), have better curative effect on bronchial asthma than nasal cavity. 3. Application of topical corticosteroids: Hormones have strong anti-inflammatory, anti-edema and immunosuppressive effects. At the same time, it can stabilize cell membrane and reduce gland secretion. There are mainly synthetic and topical hormones, such as betamethasone, flunisolone and budesonide. Generally, it will not cause systemic side effects. 4. Desensitization therapy: increase the dose of antigen to make the host resistant to the antigen, and then contact the antigen without getting sick. This method is long and troublesome (Fangfeng Tongsheng Pill, etc.). ). Others, for example, in order to relieve nasal congestion, surgery or microwave and laser therapy can be performed to reduce the sensitivity of nasal mucosa and help control symptoms. In addition, traditional Chinese medicine also plays a controlling role in the treatment of allergic rhinitis.