咳嗽是呼吸系统受刺激时所产生的一种防御性反射活动。轻度咳嗽有利于排痰,一般不需用镇咳药,但严重的咳嗽,特别是剧烈无痰的干咳可影响休息与睡眠,甚至使病情加重或引起其它并发症,对治疗不利,此时需在对因治疗的同时,加用镇咳药。 咳嗽无痰或痰量甚少,称为干性咳嗽,简称干咳,常见于急性咽喉炎、急性气管炎的初期、 Cough is a defensive reflex activity when the respiratory system is stimulated. Mild cough is conducive to expectoration, generally do not need antitussives, but severe cough, especially severe cough without sputum can affect rest and sleep, and even make the disease aggravate or cause other complications, the treatment is not good at this time Need to be due to treatment at the same time, add antitussive. Cough without sputum or phlegm very little, known as dry cough, referred to as dry cough, common in acute pharyngitis, acute bronchitis in the early,