This is a common problem and question. In many dogs, it is not allergies. It can simply be intolerance to a current dietary program.
We feel that a dog with these actions has a holistic and systemic need for a major change in the form of a 3 step program: A non-dog food (kibble or dry food) diet, Probiotics and Enzymes, and Vitamins, Minerals and Omegas to support the physical and mental well-being of an animal in this situation. We can help you with all these steps with Free consultations.