Cruzan and Tex,
If this keeps up we may be looking for property in your neck of the woods, Joy!
You need to know first what he has allergies to. Then look to moving away from those allergens. It has worked well for us to be on the coast of Florida. We thought we would not live through Salems bouts but then Seth eventually, while in hospital care, went into respirator arrest and ending up on life support in Atlanta's Chidlrens hospital.
Its all about allergens in the living environment. Start there, while continuing with aggressive immunologic therapy.
Tell the critter we said HI. And if the dog pooping in his bed room cheers him up I'm sure rubbing Buddha's belly helps too. If it would make a difference I will come and take a dump in his bedroom.