So, you are an asshat with an excuse ! join the club.  Everyone has off days.

Are your doctors trying to find a cause , or have they just labelled it nicely and quit ?

Vertigo and sound sensitivity sounds lake an inner ear thing, which untreated can cause severe headaches.

I have tinitus (of sorts) and at times it messes up my balance.

Perhaps ear plugs to keep a manageable sound level ?