Best Of

That medication your putting on him certainly emphasizes the effected areas. But looking past the bright violet colored medication he doesn't look horrible. I know you're at wits end with all the Vet visits, tests, and medications. I've had many Bull Terriers vendered to me for the same issues and the owners gave up on the dog. Handing their Bull Terrier over to me was most likely a choice they felt better about vice euthanasia.
When I've received a dog like this what happens during the first week is they normally get a lot worse. The reason is because they are in a completely new environment and their stress level and anxiety jumps up thus compromising their immune system worse than it already is. Additionally, I stop all medications immediately regardless what they are on and what I've been told is helpful.
My concentration starts with a consistent and steady well balanced diet. I never anticipate immediate results. Added to a good diet I put the dog on a daily exercise regime that truly works their cardio and tires the dog. If it's a high energy dog (which it usually is) I commit to multiple exercise regimes per day. Yes, I start off slow and work up to what I know the dog can handle. Early mornings and evenings are best. Exercise is the best medication for relieving stress. It's effective for people too. The biggest problem with explaining to someone that their dog needs exercise is that everybody's idea of exercise varies. Walking a dog a few times a day or letting out in the backyard to run around and use the bathroom is not exercise. I'll throw a ball with the dog and let the sprint. With a conditioned Bull Terrier I'll put a harness on them and allow them to drag a tire to help build muscle. In the event the particular Bull Terrier has no interest in chasing a ball than I'll run with them. If the dog owner's physical condition prevents them from running long enough to provide a workout for their dog they can purchase a long retractable lead and walk the dog a good distance. A better alternative would be to post an add on social media or somewhere else locally searching for a runner that may like to earn a few dollars by taking your dog with them while they hit the pavement for a jog. A dog with a weak immunity desperately requires exercise. Medications only provide temporary relief and often compromise the immune system making the issue worse as time goes on. Sadly, Vets fails to mention this and will happily test out as many meds as your willing to experiment with and pay for. It just never ends and the dog suffers as the meds often cause more damage than good.

That's a great photo of him.