In reply to Gordonbp:
Gosh I almost made this post. Thank you for doing so!
I seem to have some degree of BPPV as part of post-concussion syndrome (alongside quite a lot of other anti-climbing symptoms). I actually went to the crag this weekend, had a lightning bolt moment realising it was vertigo that was making climbing so difficult, and wondered if my career was over. In hindsight it feels a lot like when I've tried to climb when a vestibular migraine was coming on in the past (there are plenty of other times I'm shitting kittens, but I don't feel like I'm actually falling away from the wall).
I am under a vestibular physio who does various exercises that are supposed to help with BPPV. If you're not under one, find a good one. It hasn't helped for me yet but it's early days and I also have some other stuff (POTS, an eye tracking issue, and another type that seems to come on when I look at visual noise like busy rushing water) so hard to tell what's what.
Regardless, the vertigo is still there when climbing... I think from the act of looking up, and feeling like I'm leaning backwards. Few things that seem to have helped a tiny bit so far: realising it's not always the same every day, and fatigue seems to worsen it; probably doesn't change the vertigo, but being relaxed and calm makes it easier to think through (so don't get stressed out or knackered out with a difficult walk in to the crag, and have breaks); and like the other poster said, I started off with extremely simple bouldering indoors first - literally just traversing low down with lots of breaks and trying to remind myself to breathe. Also the obvious - less overhung routes!
I'm only top roping at present (lead and lead belay feel too dangerous with my symptoms) but I am really hoping it might improve with time. I don't know the prognosis for non-concussive BPPV I'm afraid but I'm sure a physio can at least try to advise you.
Let us know how you get on; I definitely feel your pain.
Post edited at 00:12