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咳嗽是呼吸系统疾病的常见症状,是机体的一种防卫性功能,咳嗽能将呼吸道内的异物和病理性分泌物排出体外,起到排除异物,清洗呼吸道的作用。 痰液是呼吸道发生炎症时产生的过多分泌物,其刺激呼吸道黏膜引起咳嗽,并将痰液咳出,称咯痰。 当我们出现咳嗽和咯痰时,弄清原因是非常有必要的,学会自我诊断则可以尽早地发现疾病,有利于进一步的诊断和治疗。那么引起咳嗽、咯痰都有哪些病因,这些疾病又各自有什么表现呢?
Cough is a common symptom of respiratory diseases, is a defensive function of the body, cough can remove foreign body and pathological secretions of the respiratory tract, play a role in excluding foreign body, cleaning the respiratory tract. Sputum is the respiratory secretions produced when excessive secretions, which stimulate the respiratory mucosa caused by cough, and cough sputum, said slightly sputum. When we have coughs and expectoration, it is necessary to find out the reason. If we learn self-diagnosis, we can find out the disease as soon as possible, which is conducive to further diagnosis and treatment. What causes the cough and expectoration? What are the manifestations of these diseases?