Two years ago, I had a severe bout of vertigo which declined gradually over 2-3 weeks, and which the doctors diagnosed as vestibular neuritis. At the time, they also gave me a hearing test and diagnosed the early stages of presbyacusis (age-related high-frequency hearing loss). I had already been prone to bouts of vertigo which would start without warning; they would go away after hours or days but I'd often be left with a kind of "brain fog" which could go on for weeks. The vertigo always seemed to come from the right side; often I would feel that I was going to fall over to the right, but I never had nausea or vomiting with it. Neither did I seem to lose my hearing, although I was and still am prone to tinnitus on that side. For a long time, the doctors said it was just stress and depression, because (until the bout of vestibular neuritis, when I had "decompensated vertigo in the horizontal semicircular canal") there were no pathological findings.
Thankfully the vertigo has become less extreme over the years (although it still affects me at times); however, over the last few months I feel as if my hearing has been getting worse. I often have to ask people to repeat themselves at least once or guess at what they are saying, and it is becoming a major nuisance.
Anyway, yesterday I saw an ENT specialist about the hearing loss. He did an audiogram of both ears, which showed the pattern typical for presbyacusis but also a low-frequency "notch" in the right ear:
250 Hz=15 db, 500Hz= 30 db, 1000 Hz= 20 dB, 2000 Hz=15 dB, 4000 Hz= 30 db, 8000 Hz = 50 db
250 Hz=10 db, 500Hz= 10db, 1000 Hz= 15 dB, 2000 Hz=15 dB, 4000 Hz= 30 db, 8000 Hz = 40 db
He also did a tympanogram, which - if I understood him correctly - revealed low pressure in the right ear.
Now he has given me betahistine (24 mg three times a day) and muttered something about cortisone infusions, but I have no clue why or what is going on? (to be honest, I was so baffled I couldn't collect my thoughts to ask more questions). Does this sound like Meniere's, or something else?
Many thanks in advance!