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Types of Dog Allergies and How to Treat Them

Have you heard someone tell you that their dog has allergies? Has your veterinarian suggested that allergies could be a problem for your dog? Do you suspect that your dog has allergies? If so, then youve probably realized that allergies in dogs are not quite as simple as we might wish. For starters, there are several different types of allergies that could be causing your dogs symptoms.

Allergies are a misguided reaction to foreign substances by the bodys immune system, which, of course, people and pets can suffer from. There are quite a few different types of allergies in dogs. Skin allergies, food allergies, and environmental allergens all pose challenges for dogs and their owners, and to make things more complicated, the symptoms of all these different types of allergies can overlap.

Symptoms of Allergies in Dogs

The symptoms of allergies in dogs may vary depending on the cause. A dog that goes into anaphylactic shock, for instance, will have a drop in blood pressure followed by shock, which is very different from a skin condition.

In general, however, the following symptoms could be a sign of an allergic reaction.

• Itchiness
• Hives
• Swelling of the face, ears, lips, eyelids, or earflaps
• Red, inflamed skin
• Diarrhea
• Vomiting
• Sneezing
• Itchy ears
• Chronic ear infections
• Itchy, runny eyes
• Constant licking

Some of these symptoms could also be a sign of another condition. Make an appointment with your veterinarian if you notice changes in their behavior to get an accurate diagnosis.

Types of Allergic Reactions in Dogs

Allergic Dermatitis in Dogs

Skin allergies in dogs, known as allergic dermatitis, is the most common type of allergic reaction in dogs. Skin allergies in dogs are mainly caused by one of three things: fleas, food allergies, and atopicor environmentalallergies.Flea allergy dermatitis is an allergic reaction to fleabites, and some dogs are allergic to flea saliva, which can cause their skin to become red, inflamed, or scabbed because their skin will feel extremely itchy. Its the easiest type of allergic dermatitis to treat, since you can apply flea medication for dogs to help heal their skin.

Another cause of skin allergy in dogs is from food allergies and sensitivities. Just like humans can be allergic to certain foods or ingredients, dogs can be allergic, which can cause itchy skin. Dogs with food allergies usually have itchy ears or paws, sometimes along with gastrointestinal symptoms. Dr. Klein, Chief Veterinary Officer for the AKC, says that food allergies are not as common as you might think. True food allergies result in an immune response, which can range in symptoms from hives, facial swelling, and itchiness to gastrointestinal signs like vomiting and diarrhea or a combination of both.

Environmental allergens can also affect the skin and be the cause of allergic dermatitis. Things like dust, pollen, fungus, and mold can cause these reactions, but in most cases, these allergies are seasonal. As with food allergies that affect the skin, the most commonly affected areas are the paws and ears (but also include the wrists, ankles, muzzle, underarms, groin, around the eyes, and in between the toes).

All skin allergies pose the risk of secondary infection. As your dog scratches, bites, and licks at his skin, he risks opening up his skin to yeast and bacterial infections that may require treatment.

Urticaria, or Hives, in Dogs

Also known as urticaria, hives on dogs are very itchy but are not life-threatening. Hives appear as a reaction anywhere from 6 to 24 hours after exposure to allergens. This consists of itchy, swelled skin, that usually looks like a red rash. Its easiest to spot hives on dogs that are hairless or have short coats. Dogs with longer hair can get them too, but its more likely that youd be able to fee the hives rather than see them. Your vet will prescribe an antihistamine in order to treat urticaria in dogs.

Edema of Face or Throat

Swelling of the throat or face looks severe, but its actually almost never fatal. This area of swelling, which can also include swelling of the eyelids or ear flaps, is known as angioneurotic edema. Its actually pretty easily treated, and despite how it looks, its a good sign in terms of allergic reactions.

If your dog has edema of any of these areas, the time for a fatal allergic reaction has most likely passed, and they arent in as much danger. Angioneurotic edema occurs anywhere from 30 minutes to a few hours after exposure to an allergen, and can also come with hives.A veterinarian will often give dogs with this reaction an antihistamine injection. Untreated, it may take a day or two for the swelling to subside.

Anaphylactic Shock

Perhaps the most alarming of all the types of allergic reactions in dogs is anaphylactic shock. Like people, dogs can go into anaphylactic shock if they have a severe reaction to an allergen. This happens when antibodies produced by the host react negatively to the allergen, dropping your dogs blood pressure rapidly and sending them into shock. This can be fatal if not treated, but luckily, anaphylactic reactions are rare in dogs.

This can be a response to any allergen, most commonly bee or wasp stings, or vaccine reactions. Because of this, your vet will always recommend keeping a close eye on your dog after theyve been given any new vaccine, drug, or food item, as they might be allergic.

If a dog has had a past incident and survived, the owner may carry an epipen, but sometimes the first occurrence can lead to death. Fortunately these reactions are very rare in dogs.

In some rare cases, a severe food allergy reaction resulting in anaphylaxis can occur, similar to severe peanut allergies in humans. The best way to diagnose and treat a food allergy is to work with your veterinarian to manage your dogs symptoms and discover the ingredient causing the reaction.

Diagnosing Allergies in Dogs

Flea allergy dermatitis is typically the easiest allergy to diagnose. It is usually diagnosed by identifying fleas on your dogs body and applying a product that kills fleas before they can bite to see if that solves the issues.

The first thing your veterinarian will do in allergy testing is rule out any other condition that could be causing your dogs symptoms. If your veterinarian feels that an allergy is a likely cause, they may propose allergy testing to try and determine the cause of the allergen that is causing the reaction. However, keep in mind it may not always be possible to determine the cause of an allergy with testing.

If you have ever undergone allergy testing, then you know that diagnosing allergies is often complicated. Its the same for dogs, but its worth it to understand what to stay away from when it comes to your dog.Food allergies are often diagnosed using an elimination diet. A food trial consists of feeding a dog one source of protein and carbohydrate for 12 weeks.

Treating Allergies in Dogs

The best way to treat an allergy is avoidance of the cause and allergen, which may not always be possible. They type of treatment depends on the type of allergy your dog has. For example, the best way to treat flea allergy dermatitis is to kill the fleas, whereas the best way to treat a food allergy or food intolerance is a change in diet.

Depending on the cause and severity of your dogs allergic reaction, your veterinarian will prescribe different things. For hives, they might suggest antihistamines, cortisones, medicated shampoos, whereas with food allergies they might suggest fish oil or other Omega-3 fatty acid supplements. For skin allergies, they might prescribe dog-safe anti-inflammatory wipes or shampoo on skin to provide irritation relief.

In addition to any lifestyle changes that might be necessary, your veterinarian may also prescribe an allergy relief medication for your dog that will help control the signs associated with the allergic reaction, such as itching and any secondary skin infections that might have developed as a result of the irritant.

If your dog has a severe allergic reaction, your best course of action is to get them to an emergency veterinary hospital as quickly as possible.

Chicken allergy in dogs: Vet reveals everything you need to know

While still fairly uncommon, a chicken allergy in dogs can lead to a range of uncomfortable symptoms, including skin rashes and stomach upsets. If your pup is unlucky enough to be among the small percentage of pups with a digestive system that can't tolerate poultry, you're likely wondering what can be done about it.

However, before you go swapping your canine companion over to the best dog food for allergies, it's important to get a proper diagnosis from a vet.

That's because changing dog food needs to be done slowly and carefully to avoid upsetting the balance of bacteria in your dog's intestines. Once you know for sure that a chicken allergy is causing your pup's health complaints you can work with your vet to formulate a plan.

Below, Dr. Catherine Barnette explains the main symptoms of a chicken allergy and shares her favorite prescription foods for dogs who can't eat chicken. Plus, Dr. Hannah Godfrey outlines exactly how your vet will go about testing your fur friend for a chicken allergy so you know what to expect.

Dr. Catherine Barnette

Dr. Barnette graduated from the University of Florida in 2006 where she received both her B.S. in Zoology and her Doctor of Veterinary Medicine (DVM). She has 15 years of clinical experience as a small animal veterinarian, treating dogs, cats, and occasional exotic patients. When shes not writing content as a freelance veterinary writer, Dr. Barnette lives in southwest Florida with her husband and daughter (plus two cats, a dog, and a rescued dove!) and enjoys kayaking, biking, and hiking.

Dr Hannah Godfrey studied Veterinary Medicine at the Royal Veterinary College London. After graduating in 2011, Dr Godfrey went on to become a veterinary surgeon, conducting surgery consultations on a range of animals at a small independent practice in Cardiff, South Wales, UK. Dr Godfrey has a strong interest in soft tissue surgery. When shes not helping animals back on their feet, Dr Godfrey writes a number of veterinary and animal-focussed articles.

What causes allergies in dogs?

"Allergies in dogs occur when their immune system overreacts to a substance, recognizing it as a threat when it is actually harmless," explains Godfrey. "The cells within the immune system will remember this substance and will continue to react if exposed to it in the future. Dogs can be allergic to almost any substance, but pollen, food allergies, and parasites are reasonably common."

Can dogs be allergic to chicken?

"Dogs can be allergic to chicken," Godfrey says. "Chicken is one of the most common food allergies in dogs, alongside beef and dairy products. However, to be allergic to chicken, their immune system must be familiar with the protein, so a dog must have eaten it at least once before."

Symptoms of chicken allergy in dogs

If you've been asking the question 'why is my dog itching, scratching, and biting himself constantly?', a food allergy may well be to blame.

Food allergies are often clinically indistinguishable from other types of canine allergies. There are four common allergies in dogs: dust mite allergy, environmental allergies (tree, weed, and grass pollen), flea allergy, and food allergy.

While there may be slight differences in the signs between these different types of allergies (for example, you may see visible fleas in a dog with flea allergies or you may notice seasonal signs in a dog with pollen allergies), it is nearly impossible to distinguish the cause of your dogs allergies based on appearance alone.

In dogs, nearly all allergies manifest as irritation of the skin and ears (check out our guide to skin allergies in dogs for more on how a food allergy can affect the skin and coat). Common signs of dog allergies include:

• Generalized redness of the skin
• Itching
• Chewing at the paws
• Hair loss (generalized or patchy)
• Frequent hot spots or skin infections
• Scratching at the ears
• Recurrent ear infections
• Less commonly, food allergies may trigger gastrointestinal signs, such as vomiting and diarrhea.

If your vet suspects your dog has allergies, they will recommend an appropriate diagnostic workup to determine the cause of your pets allergies. This workup may include the consistent use of the best flea treatment for dogs (to rule out flea allergies), intradermal or blood allergy testing (to rule out environmental allergies), and a food trial (to look for evidence of food allergies).

In a food trial, you will be asked to feed your dog a hypoallergenic prescription diet for a period of 2-3 months. During that time, you will need to avoid all treats and table food, to ensure that your dog is not being exposed to any potential food allergens. If your dogs signs resolve during the food trial, you and your veterinarian can safely assume that your dogs allergies are caused by something in your dogs diet.

Next, you will begin gradually reintroducing different food items, in an effort to determine which ingredients trigger an allergic response in your dog. If you feed chicken, for example, and your dog begins itching within 24 hours, you can safely assume that your dog is allergic to chicken.

Why are so many dogs allergic to chicken?

A chicken allergy is one of the three common food allergies in pets. Beef and dairy are the most common food allergy triggers in dogs, with chicken coming in at number three on that list.

Dogs can develop an allergy to any protein that they have eaten. Historically, most dog foods were made with beef as the primary protein source. Therefore, most canine food allergies were associated with beef, because thats the protein that the immune system had seen the most often.

In recent years, however, an increasing number of chicken-based diets have been created, often marketed as sensitive skin or sensitive stomach foods. Therefore, veterinarians are seeing an increase in the number of dogs with chicken allergies. If kangaroo meat were to suddenly become a common ingredient in dog food, we would likely see an increasing number of dogs with kangaroo allergies. Dogs can develop a food allergy to any protein they have been fed.

If a dog is allergic to chicken, are they allergic to turkey?

Chicken and turkey are both poultry. There are enough similarities between these birds that some dogs with chicken allergies will also react to turkey. In fact, some dogs with chicken allergies will even react to duck.

However, this isnt always the case. Some chicken-allergic dogs can eat turkey or duck with no problems. Therefore, you may need to experiment with a bit of trial-and-error in order to determine whether your dog can tolerate a turkey-based diet.

If you want to be on the safe side and minimize the risk of an allergic reaction, it is probably best to avoid feeding turkey to a dog that is allergic to chicken.

Diagnosing a chicken allergy

"Blood and skin prick tests can help diagnose a chicken allergy in your dog, but these tests can be costly and take some time," Godfrey explains. "They may also show inconclusive results, which can be frustrating. Eliminating chicken from your dog's diet completely for eight weeks (known as an elimination diet) can allow you to see whether your dog's symptoms improve, but this will only work if you check the ingredients on all of their food and treats."

Best food for dogs with chicken allergies

If your dog has chicken allergies, you will need to find a nutritious, balanced dog food that does not include chicken meat, chicken meal, or chicken by-products. You may opt to feed a prescription diet (under the guidance of your veterinarian) or search for an over-the-counter diet.

The most highly-restricted diets will be prescription diets as opposed to the best dry dog food and the best wet dog food that you can buy off the shelf. These include products like Hill's Prescription Diet d/d Skin/Food Sensitivities Potato & Venison Formula Dry Dog Food or Royal Canin Veterinary Diet Hydrolyzed Protein HP Dry Dog Food. Prescription allergy diets are manufactured on dedicated manufacturing lines, reducing the risk of cross-contamination, and careful attention to ingredients. Your veterinarian can help you select the most appropriate prescription diet for your pet.

You can also attempt to use an over-the-counter diet that does not contain any chicken, such as Purina Pro Plan Adult Sensitive Skin & Stomach Salmon & Rice Formula Dry Dog Food. Over-the-counter diets are often less expensive than prescription diets, which may make this an appealing option for some dog owners. Be aware, however, that these diets may be made on the same manufacturing lines that are used to create chicken-based diets. (This is why they are often less expensive.) Depending on the severity of your dogs chicken allergies, even a small amount of cross-contamination may be enough to trigger an allergic reaction.

How common are food allergies in dogs?

"Its much more common for dogs to experience allergy symptoms due to environmental allergens like pollen from trees and plants, or parasites like fleas and mites than food allergens," Godfrey says. "While its not easy to control the symptoms caused by any allergy, it's easier to keep your dog away from food allergens than pollen and other environmental allergens."

A chicken allergy in dogs can be a frustrating condition, but there are ways to manage it successfully. Work with your veterinarian to accurately diagnose the underlying cause of your dogs skin issues, then come up with an appropriate plan to minimize your dogs exposure to foods that trigger an allergic response. With long-term efforts and maintenance, you can minimize the frequency of flare-ups and successfully reduce your dogs signs of allergic dermatitis.

For more on what foods are safe for your canine companion to consume, check out our guide to what human food can dogs eat where a vet explains which foods you can share with your pooch.