Nasal vasoconstrictor is a drug that works to reduce phenomena such as: congestion and bleeding, swelling... However, nasal vasoconstrictor should not be used for a long time to avoid unwanted consequences.

Eustachian tube obstruction separates the middle ear cavity from the outside environment, trapping air and creating a negative pressure that pulls the eardrum inward, along with the accumulation of fluid in the middle ear cavity, increasing the pressure, causing the patient to often experience pain and hearing loss. Eustachian tube ventilation is a procedure that pumps air through the tube to help clear the Eustachian tube.