I started suffering from postural vertigo a few years ago. Even though I already was a yoga practitioner at the time, I never associated the two (neither did my doctors). I've found that, in my case, the only thing that actually stops a bout of vertigo altogether is having someone perform the Epley maneuver, which I have also learnt to perform on myself if need be. It's not easy to go back to your regular practice after having suffering from vertigo, but it's also a yogic practice to develop the confidence to explore simple balances again until you feel completely recovered. I believe yoga does help in that it fosters self-observance, patience, and body awareness. Good luck!