1. Dry cough caused by diseases is more common in the early stage of acute pharyngitis and bronchitis; Acute sudden cough is more common in bronchial foreign bodies; Long-term chronic cough, more common in chronic bronchitis, tuberculosis and so on.
2. The knowledge that phlegm dampness leads to persistent dry cough, and the cough sound is turbid, especially in the morning, and the condition is more serious, so it is mostly caused by phlegm dampness. way
3. Cold and cough, when the patient is infected with a cold, there will also be a dry cough.
4. Due to the climate, the weather is getting drier and drier, and there will be dry throat itching and pain, dry cough in winter, and no cold symptoms, which is caused by cold air allergy.