Asthma is a chronic inflammatory disease of the airway influenced by genetic and environmental factors and has a strong correlation with atopy and acquired immunity.

• 支气管哮喘是一种慢性气道炎性疾病，受遗传和环境等因素的影响，同时与过敏和免疫也有密切关系，以气道高反应性为主要特征，其发病率和致死率在逐渐递增，但确切机制尚不清楚。