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慢性咳嗽是指病程至少超过3周以上的咳嗽,咳嗽是唯一或主要的临床症状,患者既往无相应的慢性呼吸系统疾病病史,胸部体检和胸片都无异常发现,常规抗感染或镇咳治疗无效。慢性咳嗽在临床并不少见,由于病因较多而复杂,且咳嗽为惟一症状确诊往往比较困难,在确诊前,因为未能进行针对性治疗,其治疗效果较差,成为困扰患者与内科医师的疑难问
Cough is the cough with at least more than 3 weeks of history. Cough is the only or major clinical symptom. The patient has no previous history of chronic respiratory disease. Chest examination and chest radiography are normal. Conventional anti-infective or antitussive treatment invalid. Chronic cough is not uncommon in the clinic, because the cause is more complicated, and cough as the only symptom diagnosis is often more difficult, before the diagnosis, because of the failure to targeted treatment, the treatment effect is poor, become troubled patients and physicians Difficult to ask