变应性鼻炎和支气管哮喘均为呼吸道常见的变态反应性疾病,临床上有78%的哮喘病人患有过敏性鼻炎,而38%的过敏性鼻炎患者也同时患有哮喘[1]。哮喘和变应性鼻炎除病变部位和临床表现不同外,在多个方面具有相同特征:(1)鼻和下呼吸道黏膜是一个结构相似的连续体;(2)具有多种相同的? Allergic rhinitis and bronchial asthma are common allergic diseases of the respiratory tract, and clinically 78% of asthmatics suffer from allergic rhinitis, while 38% of allergic rhinitis patients also suffer from asthma [1]. Asthma and allergic rhinitis share the same characteristics in a number of ways, except for the location and clinical presentation of the disease: (1) the mucosa of the nose and lower respiratory tract is a continuum of similar structure; (2)