Compulsive scratching, licking, and chewing behaviors are quite common in dogs and have a variety of causes. They can also be harmful. One of the first signs your dog has a problem might be the development of a “hot spot” -- a red, wet, irritated area that arises from persistent chewing, licking, scratching or rubbing. Although hot spots, or "acute moist dermatitis," can occur anywhere on your dog’s body, they are most often found on the head, chest, or hips. Because dogs often incessantly scratch, lick, or bite at an area once it becomes irritated, hot spots can become large and incredibly sore rather quickly.
This post is pretty old, so I am not sure if anyone will read this. I have an allergic dog and it is NOT food allergies. If you can solve your dog’s allergies by diet then you are lucky. I have struggled with my dog allergies for years and I can offer some helpful advice. Also, I just had to put my dog back on steroids after several years and I can say the side effect are bad (the reason I came here). Anyway, I found a pretty good solution to manage my dogs allergies. You need to give the dog a bath every week using Ketochlor shampoo followed by a hydrocortisol shampoo. I put a video up on YouTube about it that nobody watches. Search for “Solution for itchy dog Nutfork”. I really hope this can help you! Dog allergies are really frustrating!