How serious is eustachian tube dysfunction? if untreated, could it get worse? self-treating doesn't seem to help.

Eustachian tube: Hello, The lining in your nose continues into the eustachian tube. Any condition affecting your nose will in turn cause ear symptoms. I would recommend afrin nasal spray as directed for 5 days. Saline sinus rinse such as NeilMed works well. An otc decongestant can be used as directed thereafter for 7-10 days. If the symptoms persist, then see your ent. He/she may recommend steroids, tube placement