FRUITS cleanse the body, hives being "waste" trapped near the skin wants OUT, ideally this should have been put down the toilet and ot out the skin. The liver needs flushed and channels opened up and proper flow corrected.
The sitz bath is number one choice and can be done by all ages. The LBB helps allot as it stimulates the liver as well.
The good news is great health should be a result of this waste coming out, but it sure would have been more pleasent to pass it in the bowl.
I tell the Amish all the time, their child has two choices, poop down the toilet or out the skin, they go home and MOM baths/scrubs the kid and gets the enema out.