Cough is mainly caused by colds, bronchitis, pharyngitis, pneumonia and other diseases. If there is no timely treatment or the patient’s body resistance is weak, coughing for a long time will cause chronic pharyngitis, chronic bronchitis, which will also affect the lung function, but also affect other organs. For example, there are repeated episodes of bronchitis will cause chronic bronchitis, will cause chronic obstructive emphysema, and even induce lung cancer, and may cause pulmonary heart disease. These diseases are very troublesome to treat, can not get better in a short period of time, will cause repeated coughing, coughing up sputum, and even coughing up blood, but also palpitations, chest tightness, edema, and even dyspnea. So you need to actively treat the cough after it occurs to prevent it from getting worse and worse.