Has anyone had a dog with as many issues as mine?

The one problem I had with my dog had to do with his teeth. When we took my dog to the vet, we had to remove nearly all of his teeth, but from what I would understand later, it would make my dog feel better in the end. My dog also takes medication because for some reason my dog has an itching problem that seems to go away when the medication is administered. I don't know what is causing the itching either, and if I could find a way to put a stop to it, I would.