生活实例:3岁的明明最近一个月每到半夜总要咳嗽,有时会咳醒,有时还会导致呕吐,严重影响睡眠。平常,明明有时会打喷嚏、流鼻涕,刚开始妈妈以为他感冒了,给他服了感冒药不见效,后来看过医生,抗生素也吃过几种,还是不行。最近妈妈又带明明去拍了胸片,没有肺炎表现。明明的爸妈非常不解:这咳嗽到底从何而起,该怎么办呢? Examples of life: 3-year-old Ming always cough every midnight last month, and sometimes cough, sometimes vomiting, seriously affecting sleep. Usually, obviously sometimes sneezing, runny nose, mom thought he was cold at the beginning, gave him a cold medicine is not effective, and later seen the doctor, antibiotics have eaten several, or not. Recently, with a clear mother to take a chest radiograph, no pneumonia. Obviously, my parents are very puzzled: the cough in the end where the rise, how to do it?