临床上通常将咳嗽时间持续,以咳嗽为主要表现,胸部X线检查无明显病变者,称为慢性咳嗽。慢性咳嗽持续时间,儿科尚未有界定。由于慢性咳嗽患儿很少有其他伴随症状,X线检查无异常,因此误诊误治率相当高。大多数患儿会被误诊为“间质性肺炎”或“支气管炎”。慢性咳嗽的病因较为复? Cough time is usually clinically continuous, with cough as the main performance, chest X-ray examination without obvious disease, known as chronic cough. Chronic cough duration, pediatrics has not yet been defined. Because there are few other children with chronic cough attendant symptoms, X-ray examination was normal, so misdiagnosis rate is quite high. Most children will be misdiagnosed as “interstitial pneumonia” or “bronchitis.” The cause of chronic cough is more complex?