Hi, I also have experienced a lot of itching whilst doing UT (drinking). It's usually down to the routes of elimination (kidneys, bowel) being congested and the toxins/acids coming out through the skin.
Reading your later post it sounds like things have improved, that's great :) That's fantastic that you've cleared Hepatitis B!! A friend of mine has Hep C and I'm trying to convince him to start UT but he's reluctant at the moment! I will tell him your story, maybe it will convince him to try.