Coughing is mainly caused by respiratory diseases, and coughing in the evening is also considered to be caused by this cause, which needs to be investigated according to the accompanying symptoms and corresponding tests. If you have a dry mouth and sore throat, it is mainly due to an infection of the upper respiratory tract, and you need to take oral medication to clear heat and dispel fire. Reflux enters the throat and irritates it, causing coughing symptoms. If you have this condition frequently, you should also consider that the cough is caused by chronic bronchitis or cough variant asthma, and you need to check your lung function and exhaled monoxide sputum to confirm the diagnosis.