Ugh, that's crazy because mine is worse when I lay down! I have PT in my right ear only, but it's not constant. If I lay on my left side, it starts up instantly and it's super loud. I cant say that I've had numbness in my face, however. :( I hope we all get answers soon!
I've had an MRA of my head so far as well as an MRI of both my neck and head, which both came back as normal. I had ultrasounds on my arteries in the summer of 2015 (due to trying to figure out why I was so dizzy) and those were normal as well. I haven't had issues with deafness thus far to...
My ENT thinks I have Ménière's disease, which has pretty much all of your symptoms. I'd suggest looking into that to start. It seems like the more I research online, the more possible diagnoses I find :dunno: