Dax is a 4 year old cat that I rescued as a kitten. For the last 6-8 mo, we have been trying to figure out why he scratches and grooms like crazy. He has created sores on his neck and base of tail so he's now sporting a "cone of shame". I've been to the vet 5(?) times. They have told me that it is fleas or food. None of their treatments have been successful. (And no one has ever found fleas either.) We have switched food 3 times, I think, even using limited ingredient allergy food. I have the same litter I've used for years and I use all perfume-free, sensitive skin everything. (My skin problems are as bad as his.) I'm exasperated. I want my boy healthy and I want that stupid cone off his head. But I'm almost out of ideas. Please help!