In every healthy person, a secretion called “mucus” is produced by some glands in the nose. These structures that moisten the nasal and sinus cavities of mucus secretion; secreted to remove impurities such as dust, pollen, microorganisms.
About 1 liter of mucus is produced daily by the glands in the nose, and this secretion travels from the nasal cavity to the sinuses and nasal cavity. It is also swallowed from the nasal cavity by going down the throat (we are not even aware of this situation).
Some diseases and conditions can lead to an increase in the amount of nasal discharge, intensity in color and consistency. In this case, the nasal discharge, which we do not notice under normal conditions, becomes a nuisance.
The main cause of nasal discharge is colds and sinusitis. Apart from these, factors such as cigarettes, various medications, and seasonal transitions can also increase the nasal discharge.