I live in the NC woods as well, I get poison ivy, poison oak, any vine that grows will break me out. I was on steriods so much year before last that I had a great moon face for the year. But I digress....my doctor told me to get Zanfel from Walmart. I did and waaala, no more steriods.
It's expensive but a little goes a long way. I use it when I see the first sign of a break out (in the shower) and I'm saved. It's wonderful stuff. I have to take the shots immediately usually to keep breathing. It's much easier than lye soap on your skin, too.
Bless your heart, I know the itch is impossible. I've got the urge to go take a shower right now after reading about your breakout.
Hugs,
Sharon