Meniere's
Your situation sounds familiar to mine. I have been a professional pilot for 35 yrs and just had to voluntarily remove myself from the flight deck.
I have considered the shunt at the House Clinic in LA, butr spoke to someone who had it. It worked initially, but she has occasional mild cases of vertigo. She has some hearing loss, sounds like she is in a tunnel all the time, as the "new" normal. i am trying everything before doing the shunt or the ear injection. Had to give up flying, which is tough in this economy. My ENT prescirbed Betahistine Hydrochloride (Severt or Serc). 16mg 3 times/day. I buy it online from Canada. Not avialable in US. Seems to help by lowering the intensity of the episodes.