I think that controlling your allergies is a good thing, however I don’t believe it is your only problem, more like a contributing factor. The underlying problem is with your ears, in my opinion. I say this because I have suffered from tinnitus for many years and have also had bouts of vertigo and nausea. I am also an allergy sufferer. I have been treated with injections over a two year period and although the allergies are under control the ear problem is not. If I had your problem I would try and find anENT in a major university hospital to address your ear problems.