支气管哮喘是常见的过敏反应性疾病,主要临床表现为呼吸困难,并在延长的呼气过程中,伴有明显的吹笛样的哮鸣音,症状发作较急,缓解亦速。多种病因,如感染、运动、非特异性刺激等均可引起哮喘发作。一、病因与发病机理(一)过敏因素多数哮喘者有过敏因素。其中一部分主要为过敏原进入机体,引起过敏反应导致哮喘,称为外源性哮喘。吸入花粉、霉菌、屋尘、螨或食用鱼、虾、某些药物(如阿司匹林)、化学物质等均可引起哮喘。 Bronchial asthma is a common allergic reaction disease, the main clinical manifestations of dyspnea, and prolonged expiratory process, accompanied by significant whistle-like wheeze, the onset of symptoms more urgent, ease the speed. A variety of causes, such as infection, exercise, non-specific stimulation can cause asthma attacks. First, the etiology and pathogenesis (A) allergic factors Most asthma allergic factors. Part of the main allergens into the body, causing allergic reactions lead to asthma, known as exogenous asthma. Inhalation of pollen, mold, housing dust, mites or fish, shrimp, certain drugs (such as aspirin), chemicals, etc. can cause asthma.