咳嗽变异性哮喘(CVA)是临床上常见慢性咳嗽的病因之一,属肺部未见明显基础病变的咳嗽,CVA常年可见,但以冬春季节多见,其临床特征为咳嗽是CVA的惟一或主要表现,尤以夜间为重,常被误认为感染性疾病(急性支气管炎)盲目使用抗菌素、抗病药毒,有时甚至使用二、三种抗菌药物,均不能缓 Cough Variant asthma (CVA) is one of the common causes of chronic cough in clinical practice. It is a cough that has no obvious underlying lesions in the lungs. CVA can be seen all the year round, but is more common in winter and spring. Its clinical feature is that cough is the only one with CVA Or the main manifestation, especially at night, is often mistaken for infectious diseases (acute bronchitis) blind use of antibiotics, anti-virus drugs, and sometimes even the use of two or three kinds of antibiotics, can not be slow