With hives, the general issue is : going too fast. Unlike Jules, I wont tell you to stop it all, but simply to reduce for a few days. Your metabolism cannot cope with your rythm of detox. It needs nutrients to do so ... slow down.
Itch: zinc deficiency
with zinc deficiency a bit of selenium supplement would help. These are antioxydants... like vitamin C they insure your cells wont suffer damage from the detox.
Skin issue means you need vitamin E supplements.
Just like Jules I will tell you to listen to your body. You obviously do something wrong. Too fast, stressed out= might involve adrenal issue (if so go easy on the vitamin C and take other antioxydants.