百日咳常发生于冬末春初,小儿得之最多,倘聚在一起,容易传染。本病主要特征是“咳时连声不绝,呈阵发性咳嗽,常兼呕吐食物或稠粘痰涎,发作剧烈时,呈呼吸迫促状,如嗽时用力过猛,则鼻衂唾血,或结合膜充血,面红唇紫,涕泪交流,饮食不思,日见羸瘦,常持续至二、三个月之久。祖国医学文献上虽然没有百日咳的 Pertussis often occurs in the late winter and early spring, and children get the most, if they get together, it is easy to spread. The main feature of this disease is ”Cough, continuous, continuous cough, often with vomiting food or sticky phlegm, when the attack is severe, it was forced by breathing, such as excessive force when the cerumen, then the nose Blood, or conjunctival hyperemia, flushing lips and lips, phlegm, tears, exchanges, foods do not think, see thin, often lasting to two or three months. Although there is no pertussis in the medical literature of the motherland