Morning cough may be related to physiologic causes such as cold air irritation or respiratory diseases such as acute pharyngitis, acute bronchitis and pneumonia.
1. Physiological causes. When the pharynx is stimulated by cold air, dust, irritating gases and other stimuli in the morning, it can cause morning cough, which can be restored to normal by moving away from the stimuli.
2. Pathologic causes. Mostly by respiratory diseases, acute pharyngitis, acute bronchitis, pneumonia and other diseases may cause pharyngeal inflammation, and can lead to increased secretion, so that people fall asleep at night, the mucus secreted by the bronchial tubes can not be discharged in a timely manner, in the morning phlegm as well as inflammation stimulation, will lead to morning cough, and there may be sputum.
When prolonged morning cough or morning cough with phlegm, the cause should be clarified under the guidance of a doctor for active treatment.