What Are the Most Common Dog Allergies?

It may come as no surprise, but our four-legged friends share many similar health ailments that humans do, including allergies. And just as human allergies are caused by a number of different catalysts, your dog’s allergy attack may be triggered by a variety of reasons, including environmental factors, chemicals, and even certain kinds of food.

These everyday substances – clinically referred to as allergens – are at the root of your pooch’s allergic reaction. So, as a pet parent, how can you determine the exact cause of your doggie’s misery, and what preventative measures can you take to protect his overall health?

What Is an Allergic Reaction?

You see that your dog’s eyes are bloodshot, perhaps he’s scratching profusely, or he may even be experiencing respiratory problems – these are all signs frequently associated with canine allergies. But you may be wondering: what is causing your dog’s allergies?

As mentioned above, dogs may show signs of an allergic reaction very similar to the ones humans experience – when your dog’s immune system begins to react adversely to particular substances (allergens), an allergy attack may be the result, with symptoms ranging from mild to severe. And even though these common substances may be harmless to a dog who is allergy-free, they could be dangerous for pups who suffer from chronic allergies.

In the case of an extreme reaction, your dog has most likely been exposed to the offending allergen via inhalation, ingestion, or direct contact with the skin. As your dog’s body tried to rid itself of the offending toxins, an array of dog allergy symptoms may appear relating to his digestive, skin, and respiratory systems.

Here are some of the signs and symptoms of dog allergies to be aware of:

  • Itchy, irritated-looking skin (red, scabbed, oozing or moist in appearance)
  • Excessive scratching or biting of the skin
  • Itchy, runny or watery/bloodshot eyes
  • Itchy back or base of the tail (indicative of flea allergies)
  • Itchy or inflamed ears/ear infections
  • Constant licking of the skin
  • Coughing, wheezing, or signs of asthma
  • Diarrhea
  • Frequent sneezing
  • Hair loss
  • Nasal discharge; runny nose
  • Paw chewing/swollen paws
  • Scabs, crusting and/or lesions on the skin
  • Secondary bacterial/yeast infections of the skin
  • Snoring (result of a sore or inflamed throat)
  • Vomiting or signs of nausea

Is My Dog at Risk For Developing Allergies?

Although nearly any dog can develop allergies throughout the course of his lifespan, there are certain breeds that have a higher predisposition for allergies, particularly flat-faced and short-haired breeds such as Pugs, Boston Terriers, Chinese Shar-Peis, American and English Bulldogs.

Other breeds commonly prone to allergies include Golden Retrievers, Labrador Retrievers, Doberman Pinchers, German Shepherds, Cocker Spaniels, Standard Poodles, Bichon Frises, English Setters, and Pit Bull Terriers.

Recognizing The Causes of Canine Allergies: Knowing The Difference

When you’re in the process of determining the cause of your dog’s allergies, it’s important to pay close attention to his symptoms and share your findings with your vet. You can take a number of proactive steps to relieve your dog’s symptoms, and many of these methods can be achieved naturally and without the usage of prescription drugs.

Talk to your vet to determine the best course of action for your canine companion. In most cases, your dog’s allergies will fall under one of three main categories (food allergies, flea allergy dermatitis or environmental), as outlined below.

There are a number of common allergens your dog may be allergic to, including:

  • Cigarette smoke
  • Cleaning products
  • Dander
  • Dust and house dust mites
  • Fabrics
  • Feathers
  • Fleas and flea-control products
  • Food ingredients (such as chicken, beef, pork, wheat, soy or corn)
  • Grass, weed and tree pollens
  • Insecticidal shampoos and washes
  • Mold spores
  • Perfumes and synthetic dyes/chemicals
  • Prescription medications (oral or topical)
  • Rubber and plastic (or other petroleum-based products)

Food Allergies

As mentioned above, food allergies are common; however, they must be given special attention, as some food allergies in dogs can pose serious health risks. Food allergies can develop at any age in dogs, and it may require a degree of investigation to determine the source of your dog’s allergies.

Some of the signs your dog may display include chronic ear infections, itchy skin/coat, and even digestive problems including vomiting and/or diarrhea. Along with your vet’s assistance, you may want to try an elimination diet to rule out any food sensitivities. Once you have identified the allergy-inducing food, be sure to read labels carefully and not feed him any table scraps that could possibly include the food substances he is allergic to.

You may also wish to take a holistic approach – speak with your veterinarian about dietary supplements and foods that can bolster his immune system. For dogs who suffer chronic food allergies, your veterinarian can advise a specially-formulated commercial dog food; you may also choose to provide a homemade diet as approved by your vet.

Here are a list of potentially dangerous/toxic food and beverage substances to prevent your dog from ingesting – they can not only trigger a possible allergic reaction, but in some instances, serious or life-threatening illness/physical complications:

  • Xylitol (an artificial sweetener found in candy, gums, toothpaste, baked goods, diet foods etc.)
  • Alcohol (beer, wine, spirits etc.)
  • Avocado (including the plant itself)
  • Bones & Fat Trimmings
  • Chocolate
  • Coffee, Tea & Other Caffeinated Beverages
  • Grapes & Raisins
  • Macadamia Nuts
  • Milk & Other Dairy Products
  • Onions and Garlic
  • Peaches, Plums & Persimmons
  • Raw Eggs
  • Raw Meat & Fish
  • Salty Foods
  • Sugary Foods & Beverages
  • Yeast Dough

Flea Allergy Dermatitis (FAD)

Flea allergy dermatitis is a very common source of skin discomfort to dogs. The actual cause of the itch lies in a skin sensitivity to the flea’s saliva and not the bite itself, resulting in severe irritation and inflammation of the epidermis – even in the case of a mild infestation, it only takes the saliva of a single flea to make your dog excessively itchy. Therefore, it’s very important to follow these flea-control tips:

  • Comb your dog daily (especially during flea season), carefully inspecting him for fleas and flea ‘dirt’ (feces).
  • Bathe your dog frequently – in addition to killing off fleas and providing soothing relief to your pooch, a clean dog is actually less ‘appetizing’ to these itch-inducing pests.
  • Use all-natural pest-repellants whenever possible, as they’re free of dangerous chemicals and harmful toxins, which can further exacerbate the situation. Your vet or pet care store can recommend eco-friendly options.

Environmental Allergies

There are numerous environmental triggers that can set off your dog’s allergies – from outdoor allergens such as pollen, grasses, and ragweed to indoor irritants including cleaning chemicals, mold, dust mites and even certain fabrics, it’s essential to be aware of your dog’s allergens and try to minimize his exposure to them.

Discovering the source of your dog’s environmental allergy is crucial, as it is a cause-and-effect situation: the more he’s exposed to the irritant, the more his sensitivity/reaction to the allergen grows. Similar to the process of elimination used during a food allergy assessment, you can help determine the cause by following these helpful suggestions:

  • Keep your dog’s air environment smoke-free
  • Use non-toxic or all-natural/organic cleaning products
  • Use an air purifier indoors
  • Bathe your dog frequently to keep his coat free of allergens
  • Administer foot soaks in between baths to avoid cross-contamination (i.e., if you think he’s allergic to ragweed and your dog is going outside, chances are he’s picking up the plant spores and tracking it all