We don’t recommend the psyllium husks and clay on the forum because it can cause internal bleeding if you have severe leaky gut.
The hives mean that your body is detoxing via the skin instead of via the organs such as kidneys, liver, etc. Your organs are overloaded from dealing with the toxins and so the second best way to detox is via the skin. If you reduce antifungals for a few days or longer, it’ll probably reduce the hives.
If you went to a naturopathic doctor they would probably prescribe you a homeopathic medicine or mineral that will help eliminate the hives.
If you do a steam room, hot tub, sauna, jacuzzi, or even hot bath, this will help your skin release the toxins from the body.
While on the diet you should avoid alcohol and coffee for a very long time.