定义分型支气管哮喘是由于过敏源和其他非过敏因素造成的支气管变态反应性炎症,它使支气管粘膜水肿,分泌物增多,以至于呼吸道狭窄,从而引起呼吸困难。支气管哮喘的发病率很高,在我国为1-3%。该病发作时,轻度的几分钟,中度的几个小时后自行缓解,但有时需要介入性治疗,重度的可能持续几天。重度的哮喘可以引起很严重的后果,因此患病后一定要重视。支气管哮喘有2种病因:一是遗 Defined asthma bronchial asthma is due to allergens and other non-allergic bronchial allergic inflammation, which makes the bronchial mucosa edema, secretions increased, and even narrow the respiratory tract, causing breathing difficulties. The incidence of bronchial asthma is high, in our country is 1-3%. The onset of the disease, mild minutes, moderate self-remission after a few hours, but sometimes requires interventional treatment, severe may last a few days. Severe asthma can cause very serious consequences, so after the illness must pay attention. There are two causes of bronchial asthma: First, left