Oddly enough I, too, am on Day 7 of quitting cold turkey and am experiencing the same thing. I can't stand being touched, I dread sleep, still have the runs, and am always freezing/get chills. Clearly its all part of the process...I think we'll be alright:)
it does make you feel better knowing others have the same symptoms!!!
well it can't be impossible to feel like this cause here is some links that also talk about it.
http://www.drugs.com/forum/need-talk/long-but-please-read-if-youre-messing-opiates-48398.html
and
http://ezinearticles.com/?Surviving-a-Heroin-Detox-at-Home-and-Making-Sure-You-Dont-Give-a-Repeat-Performance&id=2081337
You might need to get that checked out but just to make you feel better my fiancee experiences the skin problem that you describe but only during withdrawls of course. Good luck and God Bless