Thanks, all of you, for your comments. I really appreciate it. I feed them canned food, chicken and/or turkey only. I do know there is a fish allergy because I brought home fish food one time as a treat (prior to the allergy test or diet) and she went berserk. So I am very strict now about sticking to chicken and turkey. During the allergy test diet, I fed duck only. The vet said when we stop the duck, if Melinda doesn't flare up, then her regular food isn't likely the culprit. And there was no change when we went back to their regular food.

One interesting thing has happened the last couple days. She pee'd in my bed, and I am keeping her out of my bedroom until I get the mattress cleaned and dried. I could be imagining it, but it seems like her symptoms are better since that happened. My mattress is pretty old, so I'm getting a waterproof / hypoallergenic mattress pad and see if it helps.

Well, I think you've convinced me to go back to the allergist. It's just that I was losing hope. I'm confused about one thing: are there allergy injections that are different from the desensitization shots I'm giving her? What I'm giving her are antigens that are supposed to desensitize her to the substances that she tested positive for.