Nasal discharge

Nasal discharge is one of the common symptoms of nasal diseases. It can flow out through the anterior nostril, and can also flow into the nasopharynx. Those who flow into the nostril and spit out through the nasopharynx and mouth are called posterior nasal discharge. There is only a small amount of mucus in the normal nasal cavity, which is moist to maintain normal physiological functions. Lesions in the nasal cavity can cause changes in the nature and amount of nasal secretions. When the nasal secretion overflows, it is called nasal discharge.