Piggie Pie gets this rash when I switch from TOW chicken to fish. Although I give him a squirt of omega 3 fatty oils (which is fish based) in his food. Apple cider vinegar unfiltered will help and is always good to put in their food and water daily. It has MANY health benefits. Also, you can use coconut oil which is an awesome holistic ingredient that has many skin, health, benefits. Contact me if you have any questions. Nice to have you here!