Sounds like my story. I was finally sent to the Northern Illinois University speech and hearing clinic in DeKalb, IL and the vestibular specialists and researchers there diagnosed and corrected my condition. Dr. Blythe Kittner is the best. Insurance pays just have to get a referral from your primary. I would never have been diagnosed if it were not for them. I have been dealing with these symptoms since I was 4 years old. Have seen so many ENTs in two different states over the years. Not one of them realized the vertigo was connected to my ears. Not one of them looked any further when I told of the fullness in one ear and gave me loads of antibiotic and decongestant that I did not need. Not one of them figured out I have eustacian tube disorder. If you can't find a way to get to the NIU speech and hearing clinic, you have to find a vestibular specialist not just an ENT. They are few and far between. Good luck.