Nasal discharge may be caused by allergic rhinitis, influenza, vasomotor rhinitis and other diseases.
1. Allergic rhinitis: allergic rhinitis may be caused by genetic and environmental factors. Patients will have symptoms such as running watery nose, itchy nose, nasal congestion, paroxysmal sneezing, etc. So patients will have the symptom that the nasal mucus flows out automatically.
2. Influenza: Influenza is considered to be caused by influenza virus infection, and the patient will have a runny nose, nasal congestion, high fever, sore throat, dry cough and so on. If the patient has influenza, there will be the performance of snot flowing out automatically.
3. Vasomotor rhinitis: under the action of some physical (such as rapid temperature change, sunlight exposure), chemical (such as volatile irritant gases) and mental (such as emotional changes) and other factors, it can cause mast cells to release mediators, resulting in snot flowing out automatically.
It is recommended that patients who have snot flowing out of the nose need to seek medical treatment and systematic examination to clarify the diagnosis and cause of the disease.