The symptoms of coughing can be caused by a variety of respiratory diseases. 1. Laryngitis may cause coughing, but the cough is often less severe, irritating and dry, without sputum or with less sputum or thicker sputum, and needs to be treated with drugs for upper respiratory tract infections, such as Pudilan anti-inflammatory oral solution. 2. A frequent cough may also be a case of bronchitis or pneumonia, which can be diagnosed with a chest CT, and often requires treatment with intravenous antibiotics and antiviral drugs. 3. 4. It is possible to have cough variant asthma, and if you have cough variant asthma, you often need long-term anti-asthma treatment, for example, you can inhale Cymbalta to relieve the symptoms of coughing.