Have Meineires and lost hearing on one side.
When it happened, went to Shae Ear Clinic in Memphis. They did a procedure where they apply a topical steroid in the inner ear.
It did help the ringing and full feeling in ear but did not help the hearing loss. Ended up taking a weeks vac to recover from the procedure. It set off extreme vertigo. I could sit in a chair and it felt like I was being pulled backwards by a rope.
After a week that got better. Still have to avoid loud, inside activities (basketball ballgames, concerts,...) Because it causes ringing.
For me turning a certain way or straining the muscles on that side of neck sets it off. Fortunately, if I lay completely flat for 3-5 minutes it seems to reset.
I do take meclizine and valium helps some kinds of vertigo.
Always stay on antihistamines and keep decongestants handy because any fluid in the ear makes it a lot worse.