Dog developed itchy skin, red bumps, and ear issues after diet change?

Question

Hello, So over a month ago, I wanted to try my girls on a vegan diet. Aluna did fine, but a couple weeks later lily started to get extremely itchy ears, a red belly with little bumps some that seemed filled with puss, like a pimple. I brought her into vet, they gave her allergy pills and antibiotics. Now I find these itchy red bumps on her back,butt and stomach again... we are feeding food from super market, maybe it's the food? Pet's info: Dog | Keeshond | Female | spayed | 2 years and 4 months old | 35 lbs

Ricardo Fernandez, DVM · Accepted Answer

Thanks for using Petco Pet Education Center, formerly Petcoach! This is possibly due to allergies. This is likely due to an allergy to something in this new diet. It really comes down to figuring out what is causing her allergies so that they can be treated or the specific allergen avoided. A secondary infection is likely and also needs to be addressed. There are many things that can cause allergies though in most cases they can be broken down into 3 big categories: flea, food and environmental allergies. Allergies are usually worked up in a stepwise fashion starting with flea allergies as this is the easiest and cheapest to take care of. If not on a flea preventative, then it would be a good idea to get started on one. If already on one then it would be a good idea to change to something else (there are many new products out in the market). If not improved in 1-3 months then it is time to move on and check for food allergies by switching to a novel diet (new protein and new carbohydrate). If that does not seem to be the issue then you are left out having to check for environmental allergies which require blood and/or skin tests. Allergies can be very frustrating to deal with at first but so rewarding at the end when we are able to treat them effectively!

Dog developed itchy skin, red bumps, and ear issues after diet change?

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