Hi Tami,
My Bichon had bad hot spots for 10 years, especially in the warmer months. Many suggested it may be allergic reaction to flea bites, but she never had fleas (okay, she had them when we got her from the pet store and one flea when she was seven.) People also suggested it may be allergies to weed and grass pollens, so keep her off the grass as much as possible, that didn't make a difference. Many years ago, our vet suggested Benedryll which didn't work, just made her drowsy. And then I tried Sulfodene that I found at a pet store which seemed to give her at least some temporary relief (after application with a cotton ball, she would start beak wiping in circles on the floor). Our vet also gave us Panolog Cream which she licked off quickly. Then recently while searching for my usual Eukanuba dog food at the pet store, I started talking with a pet store clerk and mentioned her hot spot problem and he suggested switching to an all natural dry dog food. Because in the Eukanuba I was currently feeding her, there were many filler ingredients that a dogs body cannot digest which may contribute to her skin irritation. I was very hesitant to switch foods because she has a sensitive stomach. He told me there are many all natural foods to chose from now especially because of the tainted dog food occurence from a few years ago. So, I compared the ingredient lists and chose Prairie. Prairie actually costs almost the same as Eukanuba. (May sound strange, but Priarie smells good too.) So, after three weeks, she was completely switched to all Prairie......And her hot spots.....GONE!. I was amazed and so happy. I am sure she is quite happy too. She used to keep me awake at night licking her hot spots and now she sleeps. I only wish I figured this out a long time ago so she didn't have to suffer.
I hope you find relief for your dog. And when you do, let me know what the culprit was.
Best of luck,
Kelly