Dog rash after new food? Is it a food allergy or something else?

Skin allergies can be due to environmental allergens such as pollen, or flea allergy, as well as food allergies. However, food allergies are the most rare of the causes. It is also possible that Mitu has a secondary bacterial or yeast infection as well- they are very common sequelae to skin allergies. A soothing oatmeal based shampoo may bring some comfort while you are trying to get in to see the veterinarian.

This is probably caused by an allergic reaction. first of all make sure you de-flea Sadie regularly every month with a high quality spot on (ex. Bravecto) as fleas are by far the most common reason for these reactions. If the fleas are not the problem, it could be an allergic reaction to food or an environmental factor. this is more complicated to treat and will sometimes require medications such as Steroids, anti histamines or Cytopoint or Apoquel in order to stop the allergy.

It could be that there is something in the home or the new environment that is causing Blondie to have a contact allergy. I would have her seen by a vet. It's not normal to have a rash for a couple of months, and it needs to be examined and treated. She may benefit from steroids and medicated shampoos for the rash, which the vet can prescribe. I would have her seen by a vet first thing Monday.

It's probably an allergic reaction to something in the environment or to a new food introduced, i would recommend taking them to the vet to get an injection that will stop this allergic reaction to start with.

Poor Bosco! It could be the food causing the problem. It's interesting the rash start right around when you started him on the new food. I have colleagues who have reported seeing skin rashes in dogs who are eating Rachael Ray food. When their clients stopped feeding that food, the rash went away. It might be a good idea to try a different brand of food to see if that helps with the rash. Brands I recommend include Royal Canin, Hill's Science diet, Purina ProPlan, and Iams. Bosco should also see a vet for this rash, especially since stronger medications such as steroids may be needed to treat the rash. I would bring him into your vet first thing Monday.

If those things have not worked to ease the rash then Krunk may need stronger medications (i.e. steroids or immunomodulator drugs like Apoquel- highly recommended) from your vet. Food allergies typically develop over time and occur with pets that have been fed the same food for their entire life. Here is a website article that discusses food allergies and also canine allergic dermatitis in general and what is typically needed to work-up and treat pets with this condition. http://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=1535 Also Benadryl is only effective if the pets allergies are mild and only helps reduce itching in less than 50% of pets.

It could be related to the food, but food allergies are uncommon in puppies this young. Food intolerance is usually characterized by vomiting and/or diarrhea. I would recommend that you have Doja's skin checked out by the vet to see what could be going on. Pyoderma/skin infection and parasites would be common causes for lesions such as you described.