my dog keeps biting himself

Question
hi, over the past few months my yorkie has been chewing his back and legs vigorously. i can see this is beginning to effect him and my household. he has had fleas in the past and often gets them back so this mayb a slight cause but he has satrted to giv off a horrible stench which we dont know what it is.

often i have to remove hai from his teeth from where he has been biting himself and its wrapped around them.

His skin is red from scratching and looks very irritated.

please help!!! i really dont know what to do.

Thank You

Answer
Kirstie, your dog likely has an allergy to fleabites and needs to be seen by a vet and cleared up. A horrible stench indicates infection and you MUST have him seen. In the event this isn't fleas, it is likely a dietary allergy or intolerance, if you tell me what you are feeding I can help more. but you need to have immediate veterinary intervention. I wish you all the best in getting the situation under control for your poor little guy.
Catherine