My pup, his mother and a littermate all began suffering from similar skin problems at the beginning of spring. Not to the severity of your dog. It appears to be environmental allergies with them.
For my puppy I would use a product I have for my horse. Eqyss Micro-Tek shampoo. “Soothes on contact”. Then I would spray the really bad areas with Eqyss Micro-Tek Equine Spray. (They do make it for dogs. It’s the same stuff, but more costly.) This stuff is amazing. I’ve used it on myself.
For his ears I use epi-otic from the vet. When I ran out I put the equine spray on a cotton ball. Make sure to dry out the ears when you clean them.
He also gets raw honey from a neighbor 2x/day. That has been the ultimate fix. As long as he gets the honey he doesn’t have any problems. After 1 wk without it he begins to get itchy and hot spots. Same with his brother.
Honey must be raw, wildflower honey that is within 50 miles from home.
Food intolerance could certainly be a factor for your dog. I would try an elimination diet if you think that’s a cause.
Tick borne diseases can go into remission and you may never have another flare up again. I have another dog that has had Ehrlichia and now Lyme. I have a bunch of horses with Lyme also. I haven’t known any of them to present with those symptoms you described.
You really need to make sure the dog has a tick borne illness before giving doxy. It’s a pretty hardcore antibiotic. You certainly don’t want to give it needlessly. It can also cause stomach issues. Maybe your dog isn’t breaking down proteins well. If they do have a tick borne illness then the immune system is already taxed. The slightest allergen can become a big problem. My girl takes a probiotic (2 hrs before or after her antibiotic when on it) to help her immune system and minimize the side effects of doxy as much as possible. Fortiflora has been working great for her. She’s on it indefinitely right now, but I continue probiotics at least 2 wks after antibiotic treatment has stopped.
