I don't know much about diet therapy. I only know that my family has given me inverted chicken since I was a child (inverted chicken can be bought in rural areas), which is said to cure urticaria. But I can give you a remedy. It has been used for many years and has not been committed. Boil water and take a bath with fresh lotus leaves, wormwood and, most importantly, garlic moss. Garlic paste needs to be dried for a long time. This is not easy to find. It's the long stick on the top of our household seasoning garlic cloves. But it may also vary from person to person for reference only. I have urticaria since I was a child, and my face is itchy and I can't scratch it. But it was basically not sent later.