Welcome to Mayo Connect. I see that you have been following for a while, but recently decided to post. I hope you find someone else who shares your diagnosis, but in the meantime, I can agree that prednisone therapy can be really tough to tolerate.
I always warn my family when I need to start it again!
Has it helped to get the vasculitis under control?
Have you asked your doctor about trying to taper off a little to reduce the side effects? Do you have a long term treatment plan in the wings?
Sue