咳嗽变异性哮喘(简称CVA)又称咳嗽性哮喘、变异性哮喘,是哮喘的一种特殊类型,也是常见的引起儿童慢性咳嗽的疾病之一。其临床特点是发作性干咳,以清晨或夜间尤著,有一定的季节性,可由吸入油烟或刺激性气体、气候变化、上呼吸道感染、食物过敏或运动等诱因发作,对抗生素和止咳药 Cough Variant asthma (also referred to as CVA), also known as cough asthma, variant asthma, is a special type of asthma, but also one of the common cause of chronic cough in children. Its clinical features are episodes of dry cough, especially in the early morning or at night, there is a certain seasonal, by inhalation of fumes or irritating gases, climate change, upper respiratory tract infection, food allergies or exercise and other incentives seizures, antibiotics and cough medicine