支气管哮喘是一种以慢性气道炎症和气道高反应性为特征的异质性疾病,以反复发作的喘息、咳嗽、气促、胸闷为主要临床表现,常在夜间和(或)凌晨发作或加剧。呼吸道症状的具体表现形式和严重程度具有随时间而变化的特点,并常伴有可变的呼气气流受限。近年来,我国支气管哮喘的发病率是越来越高,尤其是儿童患者,其发病率更是远远超过了成年人,严重影响其生活质 Bronchial asthma is a heterogeneous disease characterized by chronic airway inflammation and airway hyperresponsiveness, and recurrent episodes of wheezing, coughing, shortness of breath, and chest tightness are the main clinical manifestations. It often attacks at night and / or in the early morning or Exacerbated. Specific manifestations and severity of respiratory symptoms have the characteristics of changing over time, and often accompanied by a variable limited expiratory flow. In recent years, the incidence of bronchial asthma in our country is getting higher and higher, especially in children, the incidence is far more than adults, seriously affecting their quality of life