Coughing is worse at night may be related to pathologic factors such as cough variant asthma and postnasal drip syndrome.
1. The vagus nerve is more excited at night, and the bronchial smooth muscle contracts more, increasing respiratory secretions and causing a cough reflex, so the cough is more severe at night.
2. Cough variant asthma or cardiogenic edema can cause patients to cough more severely at night.
3. Postnasal drip syndrome causes nasal secretions to flow backward instead of forward, and after lying down at night the nasal secretions go directly into the airway, leading to coughing.
4. When lying down at night, the increase in the volume of return blood causes pulmonary stasis, mostly seen in patients with cardiac insufficiency.
5. reflux pharyngitis patients due to lying down when the esophageal tension decreased, reflux symptoms more obvious, causing cough symptoms aggravated.
Cough at night more powerful may also have other reasons, if the symptoms do not get better, or there is a tendency to aggravate, it is recommended to consult a doctor in a timely manner to identify the causes of targeted treatment.