Seasonal allergies in dogs are a common issue, especially during the spring and fall months. Yes, just like humans, dogs can suffer from seasonal allergies. Dog seasonal allergies occur when the immune system becomes hypersensitive to environmental allergens that are only present during certain times of the year. 

Dogs with seasonal allergies often exhibit a range of symptoms affecting the skin, gastrointestinal system, or respiratory tract. Common signs include rashes, hives, itchiness, runny nose and eyes, diarrhea, sneezing, coughing, and frequent ear infections. Early diagnosis and proper treatment are essential for managing dogs and seasonal allergies. Persistent itching can significantly impact a dog’s physical and mental well-being. 

If you suspect that your dog suffers from seasonal allergies, consider using the Total Vet Dog Allergy Test Kit. The results can help guide your veterinarian, who will interpret them and develop a customized treatment plan based on the specific allergens identified. 

Treatment for seasonal allergies may include conventional medications and supportive care. You can also complement this with natural anti-allergy options like CBD oils and supplements.

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How do Dogs Get Seasonal Allergies?

Dogs get seasonal allergies when their immune systems overreact to environmental allergens that appear in higher concentrations during specific seasons. Seasonal allergies in dogs are most commonly observed in spring and fall, aligning with typical human allergy seasons. But the timing can vary depending on the dog, where they live, and the weather. Some dogs get allergies earlier or later in the year, and some may have symptoms all year round.

When it comes to dogs and seasonal allergies, the most frequent triggers include tree pollen in spring, grass and weed pollen throughout the warmer months, and ragweed in the fall. Mold and dust mites are also common allergens and can cause reactions at any time of year. One of the most common types of allergy in dogs results from pollen sensitivity. A 2015 study titled “Pollen Allergies in Humans and their Dogs, Cats and Horses: Differences and Similarities,” published in CTA, explains that “pollen allergies in dogs can worsen seasonally if combined with other allergies, or in the case of pollen-only allergies, are strictly seasonal.” 

How Do I Know If My Dog Has Seasonal Allergies?

You can know your dog has seasonal allergies through a veterinary diagnosis. The symptoms of dogs with seasonal allergies are often noticeable enough to raise concern. Common signs include itching, scratching, and excessive paw licking. Dogs with seasonal allergies may also exhibit sudden behavioral changes or experience recurring ear infections. 

A veterinarian confirms the condition through appropriate diagnostic tests and procedures. For a quicker preliminary assessment, a dog allergy test kit can be used at home. This convenient tool should not fully replace a veterinarian visit, which will help to confirm an official diagnosis.

A home allergy test should not be used as “a substitute for veterinary-directed allergy evaluation and diagnostics,” states the study, “Hair and Saliva Test Fails to Identify Allergies in Dogs,” issued in the Journal of Small Animal Practice in 2019.

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How Do Seasonal Allergies Affect a Dog’s Health?

Seasonal allergies affect a dog’s health negatively impacting the animal’s physical and mental well-being, often leading to a range of symptoms that reduce quality of life. 

Dog allergies cause skin irritation and gastrointestinal issues, resulting in various forms of dermatitis and upset stomachs. 

Mentally, the effects can be just as serious. Constant itchiness creates significant discomfort and can lead to behavioral changes. A 2019 study found that itchiness is linked to an increase in problematic behaviors. These include mounting, chewing, hyperactivity, coprophagia (stool-eating), begging, food stealing, attention-seeking, excitability, excessive grooming, and reduced trainability. 

Seasonal allergies not only cause physical discomfort but may also contribute to behavioral stress and diminished emotional well-being in dogs. 

What Causes Seasonal Allergies in Dogs?

Seasonal allergies in dogs occur when their immune system overreacts to harmless environmental substances, called allergens, such as pollen, mold spores, or dust. While the immune system’s role is to defend against genuine threats, in allergic dogs, it mistakenly identifies these proteins as dangerous and triggers an inflammatory response. This reaction typically happens during certain times of the year, like spring or fall, when allergen levels are higher. Exposure can happen through inhalation, skin contact, or even by licking allergens off their fur.

What are the Most Common Allergens That Cause Seasonal Allergies in Dogs?

The most common allergens that cause seasonal allergies in dogs are listed below. 

  • Grass Pollen: Pollen from Bermuda grass, fescue, ryegrass, Bahia grass, sweet vernal grass, and Kentucky bluegrass is a common trigger for allergic reactions in dogs. 
  • Flowers: Dogs are sensitive to flowers that produce large amounts of pollen, such as  certain types of daisy, marigolds, and goldenrods.  
  • Tree Pollen: Common allergenic trees include oak, birch, ash, and willow. Other known triggers are juniper, maple, mulberry, pecan, elm, and cottonwood.
  • Weed Pollen: Many dogs are sensitive to weed pollen. Frequent culprits include absinth wormwood, pigweed, ragweed, quackgrass, and Russian knapweed. 
  • Molds and Mildew: Molds and mildew release spores. These spores are tiny, airborne particles that, when inhaled, can activate a dog’s immune response and cause allergic reactions. 
  • Yeasts: Some dogs are hypersensitive to yeasts. However, yeast overgrowth that can occur on the body due to environmental factors are more common than true yeast allergies. 
  • Mites: Both dust mites and storage mites can trigger seasonal allergies in dogs. Dogs react not only to live mites but also to their dead bodies and feces. 

Are Certain Dog Breeds more Prone to Develop Seasonal Allergies?

Yes, certain dog breeds are more prone to develop seasonal allergies. While allergic reactions occur in all dogs, some breeds are genetically predisposed to them.  

Maltese, French Bulldogs, Golden Retrievers, and West Highland White Terriers show a higher predisposition to allergies, says a study published in 2025. The study also found that male dogs, indoor pets, and young dogs on a dry food diet were at a higher risk of developing allergic skin conditions. Other dog breeds commonly affected by seasonal allergies include Labrador Retrievers, Shih Tzus, and Boxers. 

What Are the Signs of Seasonal Allergies in Dogs?

The signs of seasonal allergies in dogs are listed below. 

  • Itchy Skin: Allergies often cause intense itchiness in dogs. To relieve the discomfort, affected dogs frequently lick, bite, and scratch themselves. 
  • Stained Fur: Excessive licking and contact with saliva can lead to brownish discoloration of the fur, especially noticeable in white-coated breeds. 
  • Red or Inflamed Skin: Seasonal allergies can make a dog’s skin red, irritated, and inflamed. Ongoing scratching or licking increases the risk of secondary skin infections. 
  • Hot Spots: Hot spots, also known as moist eczema, develop when a dog obsessively licks certain areas. Hot spots commonly appear on the sides of the body and at the base of the tail. 
  • Hives: Hives are raised, itchy bumps that break out in response to allergens. These are the easiest to spot on sparsely haired areas, such as the belly and armpits. 
  • Hair Loss: Continuous scratching and skin inflammation can damage hair follicles, leading to localized hair loss or alopecia, particularly on the belly, legs, and tail. 
  • Frequent Ear Infections: Allergies often trigger ear infections, which may cause dogs to shake their heads frequently or scratch at their ears.
  • Eye Problems: Watery, red, and swollen eyes are common in dogs with seasonal allergies. They may also rub their faces to relieve eye irritation. 
  • Respiratory Issues: Airborne allergens can trigger coughing, sneezing, and wheezing-common dog seasonal allergies symptoms. 
  • Digestive Upsets: While less common, symptoms of seasonal allergies in dogs may include diarrhea, loose stools, and vomiting. These digestive issues are more typically associated with food allergies but can occasionally occur with seasonal triggers. 

Can Seasonal Allergies Cause Diarrhea in Dogs?

Yes, seasonal allergies can cause diarrhea in dogs. While gastrointestinal symptoms are not typically associated with seasonal allergies in dogs, they have been reported in some cases. 

When the dog’s immune system becomes overwhelmed by allergens, it releases large amounts of histamine, a chemical that can trigger inflammation and disrupt normal digestive function.This immune response may lead to symptoms such as dog diarrhea, vomiting, gas, and abdominal discomfort. 

Although dog diarrhea is more commonly linked to food allergies, seasonal allergies can also cause changes in stool color and consistency along with other digestive issues.

Can Dog Seasonal Allergies Lead to Skin Allergies?

Yes, dog seasonal allergies can lead to skin allergies. In fact, seasonal allergies can both trigger new skin issues and worsen existing ones. These allergies can manifest with skin, respiratory, or gastrointestinal symptoms, but seasonal skin allergies in dogs are the most common manifestation. 

Dog seasonal allergies often result in skin irritation, inflammation, and persistent itching. The seasonal allergies’ itchy skin typically affects specific areas such as the ears, face, paws, abdomen, and armpits. According to an article by Cornell University, dog skin allergies are widespread, affecting approximately 10 to 15% of the canine population.

Can Seasonal Allergies Cause Coughing and Sneezing in Dogs?

Yes, seasonal allergies can cause coughing and sneezing in dogs. When exposed to allergens, a dog’s immune system reacts by releasing histamine. Histamine triggers irritation and inflammation in the respiratory tract, leading to symptoms like coughing and sneezing. 

In addition to dog seasonal allergies sneezing, some sensitive dogs may also experience wheezing due to mucus buildup in the airways, along with runny noses. 

What Are the Most Common Allergic Reactions to Dog Seasonal Allergies?

The most common allergic reactions to dog seasonal allergies vary depending on the affected system. Some dogs develop skin-related symptoms, while others may experience gastrointestinal or respiratory issues. 

The allergic reactions to dog seasonal allergies are listed below. 

  • Skin Problems: Skin problems are the most commonly reported signs of dog seasonal allergies. These skin conditions can range from mild irritation to secondary skin infections. Hot spots, hives, hair loss, and skin lesions are also common.
  • Gastrointestinal Issues: Some dogs with seasonal allergies develop digestive issues, which may include vomiting, diarrhea, loose stool, flatulence (excess gas), loss of appetite, and abdominal discomfort. 
  • Respiratory Signs: Coughing, sneezing, wheezing, and a runny nose are typical symptoms of seasonal allergies. More severe signs, such as respiratory distress, characterized by shallow and troubled breathing, may indicate a serious allergy reaction in dogs and require immediate veterinary attention. 

How to Treat Seasonal Allergies in Dogs?

The instructions on how to treat seasonal allergies in dogs are given below. 

  1. Use Antihistamines or Steroids. Antihistamines, like Benadryl and Zyrtec, are available over the counter, and offer a safer, though milder, option for managing allergies.  In contrast, steroids are more potent but come with potential side effects and must be prescribed and monitored by a veterinarian. 
  2. Try Specialized Allergy Medications. Dogs with severe seasonal allergies require special medications such as Apoquel. It is a prescription medication that is highly effective in reducing itchiness and inflammation related to allergic reactions.
  3. Ask about Immunotherapy. Allergy shots, also known as immunotherapy, are recommended for dogs with persistent seasonal allergies treatments. This treatment gradually exposes the dog’s immune system to the allergens to help desensitize it over time. 
  4. Practice Environmental Control. Managing your dog’s environment is a crucial part of dog seasonal allergies treatment. Regularly clean your home and your dog’s bedding, use HEPA air filters, and limit outdoor exposure during peak allergy seasons to reduce contact with allergens. 
  5. Invest in Topical Treatments. Topical treatments, such as hypoallergenic shampoos, creams, and homemade baths or rinses, can offer seasonal allergy relief for dogs. These treatments are to be used alongside systemic medications for a more comprehensive approach.  
  6. Buy Dietary Supplements. Certain dietary supplements, like CBD oil, omega fatty acids, and probiotics, can support the immune system and reduce allergic reactions. These are best used in combination with primary allergy treatments to enhance overall effectiveness.  

When to See a Vet for Dog Seasonal Allergies?

See a vet for dog seasonal allergies if the symptoms are severe, persistent, lead to infections, or interfere with daily life. Severe dog allergy symptoms include hair loss, thickened patches of skin, and open sores. Dogs experiencing these issues should be evaluated by a veterinarian as soon as possible. In rare but life-threatening cases, dogs can experience anaphylaxis—a severe allergic reaction that requires immediate emergency care.  Signs of anaphylaxis in dogs include difficulty breathing (rapid, shallow breaths or wheezing), swelling, hives, seizures, collapse, and loss of consciousness. 

How are Dog Seasonal Allergies Diagnosed?

Dog seasonal allergies are diagnosed through a combination of clinical evaluation and allergy testing. Clinical evaluation includes observing symptoms, reviewing the dog’s medical history, and physical examination. Allergy testing is more complex and involves various procedures. Intradermal skin testing and serologic blood testing are viable options. 

Intradermal allergy testing (IDAT), also known as skin prick testing, involves injecting small amounts of various allergens into the dog’s skin and observing the reactions. Serologic blood testing requires a small blood sample, and analyzing it with ELISA (enzyme-linked immunosorbent assay) to detect antibodies associated with specific allergens. 

When diagnosing seasonal allergies in dogs, it is essential to rule out other conditions with similar symptoms. Flea infestations, mite infestations, and food allergies are common differential diagnoses that should be considered. 

At-home allergy test kits can be a convenient and practical tool for pet owners looking to identify potential allergens or harmful ingredients affecting their dogs. While these kits should not replace an official veterinary diagnosis, they can serve as a helpful first step in recognizing risks or patterns in your dog’s routine.

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What are the Best Home Remedies for Seasonal Allergies in Dogs?

The best home remedies for seasonal allergies in dogs are listed below. 

  • Grooming and Brushing: Regular grooming and brushing can help alleviate allergy symptoms in dogs by physically removing allergens from their coat. By clearing away these irritants, you reduce the source of discomfort and skin reactions.
  • Paw Wipes or Rinses: Wiping or rinsing your dog’s paws can help remove allergens they may have picked up outside. This simple routine reduces exposure and helps minimize allergic reactions. 
  • Oatmeal Baths: Oatmeal is a natural moisturizer with soothing properties, making it one of the best dog seasonal allergies home remedies. Add finely ground oatmeal to the bath water or use a commercially available oatmeal shampoo for dogs. 
  • Chamomile Tea Rinses: Chamomile can be used as a soothing spray on irritated areas of your dog’s skin or as a post-bath rinse. Its natural calming properties help relieve itching and inflammation caused by seasonal allergies. To use, simply brew chamomile tea, allow it to cool completely, and apply it gently to the affected areas.
  • Aloe Vera Gel: Apply pure aloe vera gel directly to irritated skin for seasonal allergy relief for dogs. Aloe vera has skin-friendly properties, and the gel-like consistency cools down the irritated skin and helps reduce discomfort. 

What can I Give my Dog for Seasonal Allergies?

The things you can give your dog for seasonal allergies are listed below. 

  • OTC Allergy Meds: Over-the-counter human allergy drugs such as cetirizine (Zyrtec®), diphenhydramine (Benadryl®), and loratadine (Claritin®) are also safe for dogs. Consult the vet before using a dog seasonal allergy medicine. 
  • Fish Oil Supplements: Fish oil supplements contain omega-3 fatty acids. Omegas are helpful for dogs with allergies because they have a potent anti-inflammatory effect and boost overall skin health. 
  • CBD Products: Cannabidiol (CBD) products for dogs reduce inflammation and itchiness while supporting the dog’s immune system and skin health. Always use high-quality CBD products, formulated exclusively for dogs. 
  • Dog Probiotics: Probiotics are not standard seasonal allergy medicine for dogs, but can help strengthen the immune system and skin wellness. Use probiotics specifically made for dogs to ensure maximum effectiveness and safety. 

Can you Prevent Dog Seasonal Allergy Flare-ups?

No, you cannot prevent dog seasonal allergy flare-ups. However, you can reduce their intensity with certain strategies, such as limiting allergen exposure, maintaining proper hygiene, and using targeted products. Keep your dog indoors during peak pollen seasons and use HEPA air purifiers to filter out airborne allergens and reduce exposure. Wipe the dog’s paws and fur after every walk. Bathe your dog regularly with skin-soothing shampoos and wash their bedding frequently. Support the dog’s immune system with special diets and supplements, such as omega-rich oils, CBD products, and probiotics, formulated specifically for canines which should help reduce allergic reactions.

Can CBD Oil Help Manage Dog Seasonal Allergies?

Yes, CBD oil can help manage dog seasonal allergies. CBD (cannabidiol),  a  natural extract from hemp, is known for its health-supporting properties. CBD works by balancing the immune system, reducing inflammation, and relieving common allergy symptoms. When used appropriately, CBD is safe for dogs.

CBD has direct “anti-inflammatory and immuno-modulating properties” on the dog’s immune cells, found a study, “Effect of Cannabidiol (CBD) on Canine Inflammatory Response: An Ex Vivo Study on LPS Stimulated Whole Blood,” issued in Veterinary Sciences in 2021. 

Cannabidiol “is useful in decreasing pruritus,” says a 2022 study. CBD for dog allergies can be used as an adjunct therapy alongside conventional medications for allergic reactions. Allergic dogs benefit from CBD oils, CBD treats, and topical CBD balms. 

Can Dog Seasonal Allergies be Cured?

No, dog seasonal allergies cannot be cured. Allergies are considered as chronic conditions, meaning they are ongoing and have no permanent cure. However, with the right treatment plan and lifestyle adjustments, seasonal allergies in dogs can be effectively managed.

How Effective Are Probiotics for Seasonal Allergies in Dogs?

Probiotics are effective for seasonal allergies in dogs. These live microorganisms, once ingested, enhance the dog’s microbiota and provide various health benefits. Dog probiotics help boost the immune system, support gut health, strengthen the skin defences, and relieve specific allergy symptoms, such as itchiness. The skin of allergic dogs has “lower species richness when compared to healthy dogs,” found a 2014 study.

Supplementing allergic dogs with probiotics enhances the diversity of their skin microbiome, helping to strengthen and protect it against allergen attacks. The market offers plenty of probiotics for dogs products. Among them, probiotic powders for oral use are the most popular and well-researched. While probiotic sprays for topical application are also available, their exact efficacy has not been extensively studied.