Thank you everyone for all, very much appreciated! dwerten -- can't thank you enough for the labs, the dermatology clinic and the info. Do you know if Jean Dodds sees patients herself? Will also look into the Animal Dermatology clinic. Am not new to CA anymore, but have contacts who keep me informed of all the cheaper vet prices back east :-P
Do not use flea products, Zoe runs high fevers, vom and diarrhea with those. Do use friendly nematodes in the yard and have had no fleas for several years now. Can't use steroids, oils or fats (lux patellas, pancreatitis). Z wears infant size short sleeved T-shirts and these seem to help but back end still itches (Dee Dee is wonderful in hers!). Do have Oreck air purifier and hypoallergenic a/c filters. Use only hypoallergenic detergents. No more oatmeal shampoo, will look for Blue at Petco. Z eats only Primal Nuggets raw Lamb and Rice and Anergen (lamb and rice, no grains). She seems to be getting loose stools now though if I change the ingredients at all, so maybe food could be a factor

Loose stools with even small amts of digestive enzymes or probiotics, too :-(