My poor boy--I took him to the vet yesterday for something completely different, and when I took his collar off I saw that the skin underneath the collar was completely raw and smelled to high heaven. Turns out it's a hot spot that got infected. It's so huge, I don't know how I didn't know it was there! She gave me antibiotics and special shampoo, but that was it. I just got him some benedryl for the itching (in addition, he seems to have a skin infection, so his entire body is itching). Does anyone out there have any additional tips on keeping him comfy? (No collar until it clears up.) He's NEVER had anything like this before, could his age (13+) have something to do with it?