支气管哮喘是由多种细胞特别是肥大细胞、嗜酸性粒细胞、T淋巴细胞,、嗜中性粒细胞、气管上皮细胞等参与的慢性气道炎症。在易感者中此种炎症可引起反复发作的喘息、气促、胸闷和(或)咳嗽等症状,多在夜间和(或)凌晨发生,多有两肺呼气相哮鸣音,具有气道高反应性和气流受限可逆性 Bronchial asthma is a chronic airway inflammation that is involved in a variety of cells, especially mast cells, eosinophils, T lymphocytes, neutrophils, tracheal epithelial cells and the like. In susceptible persons such inflammation can cause recurrent wheezing, shortness of breath, chest tightness and (or) cough and other symptoms, and more in the night and (or) occurred in the morning, there are more than two lung expiratory wheeze, with gas Road Reactivity and airflow limited reversibility