Could My Dog Have Allergies?

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Spring is definitely in the air. And for many people, that means insufferable runny noses and itchy, watery eyes. But what about our dogs? Can they suffer from allergies, too? And what about other types of allergens—can our pups become allergic to certain foods or materials like humans can?

Can dogs have allergies?

Yes, dogs can experience allergies just like humans do. In fact, allergies are fairly common across all dog breeds, typically appearing once a dog has reached the age of one or two years.

Some of the most common canine allergens include pollen, mold, dust mites, flea bites, and certain medications and foods. Fortunately, there are ways to treat and alleviate your dog’s allergy symptoms. But first, you’ll need to pinpoint what’s causing his reactions in the first place.

How are dog allergies diagnosed?

Tan dog facing the wind in tall grass. .

Image by Tony Alter via Flickr

When it comes to diagnosing allergies in your dog, the path isn’t exactly straightforward. There’s no simple test that your vet can run to determine if your pet is actually allergic to something.

Because many canine health conditions such as mange and ringworm mirror the symptoms we see with an allergic reaction, it’s important to rule those out first. Your vet can run some tests to make sure your dog doesn’t have any underlying medical conditions that need to be addressed.

Once he’s been given a clean bill of health, your vet will want a full rundown of your dog’s daily diet. If a food allergy seems plausible, your vet will most likely recommend a food trial during which your dog will be kept on a strict prescription diet for several weeks. Should his issues resolve, the presence of a food allergy is a safe bet.

Testing for environmental allergies in dogs looks a little different. Your vet may conduct a skin test in which he’ll inject a harmless amount of the suspected allergen underneath your dog’s skin, noting any subsequent redness or swelling.

Symptoms of allergies in dogs

Brown dog scratching an itch

Image by Donnie Ray Jonesvia Flickr

While confirming allergies can be a complicated process, there are some common symptoms to look out for. If you have reason to believe your dog is experiencing an allergic reaction to something, take note of the following telltale signs:

  • Scratching and biting—your dog may favor one specific body part to gnaw on, or he might itch all over
  • Excessive paw-licking
  • Red, itchy, inflamed skin
  • Red/runny eyes

  • Hives
  • Swelling of the face, ears, lips, or eyelids
  • Extra shedding
  • “Scooting”—or rather, dragging his rear end along the floor
  • Difficulty breathing—your dog may also develop a cough or sneezing fit
  • Vomiting and/or diarrhea
  • Chronic ear infections—dogs with ear inflammation are more prone to bacterial infections, according to PetMD. Because your dog’s ear canal is moist, dark, and warm, it’s an ideal breeding ground for bacteria to thrive. If you notice any ear discharge or your dog is scratching his ears more than usual, he could be suffering from an ear infection, requiring veterinary intervention.

Types of allergies seen in dogs

White puppy playing in tall grass

Image by Isa Karakusvia Pixabay

When you’re trying to get to the bottom of your dog’s allergy issues, it’s helpful to break down the types of allergies he can suffer from. Canine allergies fall into one of three main categories.

1. Skin allergies

Reactions caused by direct contact with an allergen are rarely seen in dogs. There are some dogs, however, who may be sensitive to certain materials such as wool or carpeting. They can also develop allergies to lawn pesticides or even the pyrethrins found in their flea collar.

2. Food allergies

Although relatively uncommon, canine food allergies can occur at any point during your dog’s life. A dog who happily snacked on carrots one day can suddenly exhibit adverse reactions to them the next day.

Food allergies may not manifest in your dog how you would expect them to. Instead of a miserable bellyache, it’s much more likely that your dog will experience adverse skin reactions such as itchiness or lesions. Some of the most common foods that dogs can be allergic to include soy and dairy products, wheat gluten, eggs, beef and lamb.

3. Environmental allergies

Seasonal allergy sufferers already know what an uncomfortable nuisance allergies can be. What you might not know is that our canine companions can also suffer from reactions to grass, pollen, and dust.

Pesky insects can also trigger an allergic reaction in your dog. Common offenders include spiders, ticks, horseflies, mosquitoes, and bees. But, by and large, the most common insect allergen seen in dogs are flea bites. For dogs with flea allergy dermatitis (FAD), a single bite will lead to agonizing itching that can drive a dog to scratch himself so badly that he even removes some of his fur.

Treatment options for allergies in dogs