🐶🍗 How Can You Tell If Your Dog Has a Food Allergy? Itching, Ear Infections and Recurring Diarrhea — Are They Connected?

🐶 Your dog itches a lot, licks their paws, keeps getting ear infections and also has diarrhea... are these symptoms connected?

The answer is "they may be." Dogs with a food allergy don't only have stomach problems — they may also show skin and ear symptoms. 👀

In this article, the PETMED+ veterinary team looks at the symptoms that may be linked to food allergies in dogs, other causes that produce similar symptoms, and reliable ways to assess the problem.

Summary

Dogs with a food allergy may show skin, ear and digestive symptoms, such as itching, scratching, frequent licking or chewing of the paws, red skin or recurring skin infections, ear infections that keep coming back, diarrhea, soft stools, vomiting or increased gas. However, having these symptoms does not necessarily mean your dog has a food allergy, as they can also be caused by parasites, infections, environmental allergies or other health problems.

If you suspect a food allergy, switching between many different foods to test it yourself is not recommended. The reliable way to assess it is an elimination diet trial (a structured food trial), followed by a food challenge (re-testing with the original food). If the symptoms are chronic or keep coming back, take your dog to a veterinarian.

Table of Contents

1. What are the signs of a food allergy in dogs?

2. Having these symptoms ≠ definitely a food allergy

3. So how can you tell if your dog has a food allergy?

   • When should you take your dog to a vet?

4. 📞 Free Consultation with PETMED+ Veterinarians

5. About the Author

What are the signs of a food allergy in dogs?

Itching • Ear infections • Diarrhea — these 3 symptoms... may be linked to food!

Watch your dog for these signs. 👇

🐾 Skin — itching, scratching, frequent licking or chewing of the paws

🔴 Skin — red, inflamed skin or recurring skin infections

👂 Ears — itchy ears or ear infections that keep coming back

💩 Digestive tract — diarrhea, soft stools or frequent bowel movements

🤢 Digestive tract — vomiting, bloating or increased gas

💡 Some dogs may have skin + digestive symptoms at the same time.

Having these symptoms ≠ definitely a food allergy

But! Having these symptoms ≠ definitely a food allergy. ⚠️

Similar symptoms can also be caused by

• 🐛 Parasites

• 🦠 Infections

• 🌼 Environmental allergies

• 🩺 Digestive problems or other health problems

So how can you tell if your dog has a food allergy?

The reliable way to assess it is an elimination diet trial → food challenge.

🩺 Follow a planned diet trial strictly, then assess whether the symptoms improve and whether they come back when your dog is given the original food again.

❌ Don't switch between many different foods on your own, as this can make the cause even harder to find.

❌ Don't rely on a blood test alone to confirm a food allergy.

When should you take your dog to a vet?

If the symptoms are chronic or keep coming back, take your dog to a veterinarian to find the cause and plan an appropriate diet trial.

💙 Itching + ear infections + recurring diarrhea? Don't jump to the conclusion that it's a food allergy.

📞 Free Consultation with PETMED+ Veterinarians

Does your dog keep having itching + ear infections + stomach problems?

Contact PETMED+ for basic advice on choosing food and health care products for your dog.

💙 Because symptoms that look like a food allergy can have many causes, finding the right cause helps you care for your dog in the right way.

Follow PET MED+ 🐾 for easy-to-understand tips on medicine, food, and dog and cat health, so you can care for your pets the right way. 💙

LINE: @PETMED

About the Author

This article was prepared by the PETMED+ Veterinary Team.

PETMED+ is a pet pharmacy focused on providing accurate information about medicine, nutrition and pet health care, helping pet owners make safe and appropriate decisions for their pets.

Note: The information in this article is for general education only and cannot replace a diagnosis, treatment, or individual advice from the veterinarian in charge of your pet's case.