病因:病毒或细菌感染。多见于过敏性体质的婴儿及肥胖(有湿疹或其他过敏史)婴儿。此类型的支气管炎与一般支气管炎不是一种病,是由于支气管狭窄,粘膜充血水肿和炎症刺激支气管平滑肌发生痉挛而引起,喉部可闻痰鸣或哮鸣,因而称哮喘性支气管炎。但它又不同于哮喘病,虽然两者都有哮喘,但却有根本的区别,见下表。 Etiology: viral or bacterial infection. More common in allergic constitution of infants and obese (with eczema or other allergic history) infants. This type of bronchitis and bronchitis is not a common disease is due to bronchial stenosis, mucosal congestion and edema and inflammation caused by irritation of bronchial smooth muscle spasm, throat phlegm or wheeze can be heard, so called asthmatic bronchitis. But it is different from asthma, although both have asthma, but there is a fundamental difference, see the table below.