Unfortunatley allergies are tough. It could be food or environmental and from what my vet told me, costly to test for. He is trying to narrow things down.

I have put them all on Science Diet z/d and he said I should put hepa filters in my house. We live in a high pollen region.

2 of my cats have had cortisone and it does make them perfect....but could have bad side affects if used long term  :?