Hey Marty sorry to hear about the shingles. The vertigo is something I am familiar with because it severely affected me one summer. After going through the manipulations of my head and neck and taking the meds I was frustrated with the recurrences and one day I just said "f" it and took the bike to the most whooped out part of rampart and put the helmet on and took off. The first fifty yards were interesting and then with the helmet whipping my head back and forth the vertigo went away. I didn't get better in the whoops but I wasn't dizzy anymore.