咳嗽是人体一种保护性呼吸道的反射,当呼吸道(口腔、咽喉、气管、支气管)受到刺激(如炎症、异物)后,由神经末梢发出冲动传入延髓咳嗽中枢引起的一种生理反射,通过咳嗽动作以排出呼吸道分泌物或异物(如黏痰、细菌体、纤维),来保持呼吸道的清洁和通畅,因此我们可以说,咳嗽是一种有益的动作,有时亦见于健康人体。在一般情况下,对轻度而不频繁的咳嗽,只要将痰液或异物排出,就可以自然缓解,无须应用镇咳药。但是,对那些无痰而剧烈的干咳,或有痰而过于频繁的剧咳,不仅增加患者的痛苦,影响休息和睡眠,增加体力消耗,甚至促进病症 Cough is a protective reflex of the human body. When the respiratory tract (mouth, throat, trachea, bronchus) is stimulated (such as inflammation, foreign body), a physiological reflex caused by the afferent nerve impulses to the medulla oblongata cough center is passed Coughing to discharge respiratory secretions or foreign bodies (such as phlegm, bacteria, fiber), to keep the airway clean and smooth, so we can say that coughing is a beneficial action, sometimes seen in healthy people. Under normal circumstances, mild and infrequent cough, as long as the sputum or foreign body discharge, you can naturally ease, without the need for antitussives. However, for those who do not sputum and severe cough, or sputum and frequent cough, not only increase the patient’s pain, affect rest and sleep, increase physical exertion, and even promote the disease