在日常生活中,由于接触到刺激性气体或粉尘,许多人会出现短暂性咳嗽,属于正常现象,但绝大多数咳嗽是有其病理原因的。除了呼吸道感染及肺部炎症外,胸部肿瘤、其他系统疾病、药物等也是引起咳嗽的主要原因。以下几种咳嗽应引起患者及医生的警惕：1.中老年人出现顽固刺激性咳嗽,或原有咳嗽但咳嗽性质发生改变,应高度警惕肺部恶性肿瘤的可能。 In everyday life, it is normal for many people to have transient cough due to exposure to irritating gases or dust, but most coughs have their own pathological cause. In addition to respiratory infections and lung inflammation, chest cancer, other systemic diseases, drugs and so on are also the main causes of cough. The following types of cough should arouse the vigilance of patients and doctors: 1. The elderly appear stubborn irritating cough, or the original cough but the nature of the cough changed, should be highly alert to the possibility of lung cancer.