I have done many fasts and I can tell you that I had always had itchy skin and rashes everywhere.
You can check all my messages on this forum. I have found a great relief from applying freshly squeezed organic lemon juice. I have tried apple cider vinegar and coconut oil. But lemon is the best.
I have read that when our liver is not functioning 100% the skin removes the toxins.
You should feel good that toxins are coming out of your body.