Sorry you've had such a tough time of it, moosey. You finally got "the good stuff" and not only it didn't help, it's made things worse. That's a tough spot to be in.
Did you get hives that blistered or did you get spontaneous sores ? In all my years of oncology then hospice, I've never seen that kind of allergic reaction to morphine. Just what you DON'T need on top of RSD !
I hope that you feel better soon.