look in http://www.solveeczema.org,
a lady figure out that detergent, which is made from petroleum/mineral oil, is the cause of her son's ezcema, and she used sope(made with real animal fat) flakes, and after a long period, she finally cured her son's ezcema.
increased skin permeability is the cause of hives too(read for med book). Do you know that almost all the cleaning produst, skin creams are made of petroleum/mineral oil, including baby oil? That's why I do not have skin problem whenever I go back to my home town, a small village near sea. mineral oil(in solid is called petroleum) will cause severe permenent lung disease in some people, when inhaled, and stays in all of our lungs too, if inhaled.
This might be the reason for lots of people who got scabies from cats, dogs, or triggered by both gall mites and animal mites. Human usually do not get scabies from animals, that's why doctors have no ideas.
Hope this will help us all.
I love this site, and http://www.earthclinic.com