小儿支气管哮喘多见于4～5岁以上的小儿,约一半始于3岁以前。10岁以下男孩多于女孩(约为2:1),随着年龄增加,男孩发病倾向减少,甚至女多于男。约有30～50％的哮喘小儿到青春期症状消失,且女孩略早于男孩。如到了青春期尚未消失,到了青年期就不太可能消失了。 Pediatric bronchial asthma more common in children 4 to 5 years of age, about half began before the age of 3. There are more boys under 10 than girls (about 2: 1). As they age, the incidence of boys decreases, even more than men. About 30 to 50% of asthmatic children to adolescent symptoms disappear, and the girl a little earlier than the boy. If adolescence has not disappeared, it is unlikely that adolescence will disappear.