Walter has been scratching a lot lately; sometimes for five minutes at a time. His belly and underarms get red, but he hasn't scratched himself raw anywhere or made bald spots. He hasn't been introduced to anything new since we have had him (same dog food, treats, grass, etc.) I have made him a vet appointment, but I just wanted to be prepared for what it might be. After much research (which said anything from my dog could die soon to its basically nothing, the internet sucks), I am between seasonal allergies or food allergies, although I hope it's not food. Any thoughts?