支气管哮喘是一种常见的变态反直性疾病,此病在儿童期也是常见的,发病多在5岁以下就开始,甚至有的始于婴幼儿时期。一、发病原理和发病诱因 (一)发病原理支气管哮喘的发病原理至今未完全阐明,但近年来研究得比较多,大致可有以下两方 Bronchial asthma is a common allergic disease, which is also common in childhood, with onset mostly under 5 years of age and even beginning in infancy. First, the pathogenesis and incidence of incentives (A) pathogenesis The pathogenesis of bronchial asthma has not been fully elucidated, but in recent years more studied, there may be roughly the following two