Dog Hayfever Is More Common Than You Think — Signs, Symptoms and What Helps

Can Dogs Get Hayfever? Signs, Treatments, and What Owners Need to Know

Yes, dogs can suffer from hayfever. And if your dog has started licking their paws, sneezing after walks, or scratching more than usual, they might be reacting to seasonal pollen.

In this in-depth guide, we’ll cover everything you need to know about hayfever in dogs: the signs, how it’s diagnosed, which treatments are safe, and how to reduce your dog’s symptoms at home. We’ll also answer key questions such as “Can I give my dog Piriton?” and “Can dogs take antihistamines?” based on up-to-date veterinary advice.

What Is Hayfever in Dogs?

Hayfever, also known as seasonal allergic rhinitis, is an allergic reaction to airborne allergens like pollen, grass, weeds, or mould. While in humans it causes sneezing and watery eyes, in dogs, hayfever typically manifests through skin irritation, excessive scratching, and secondary infections.

Unlike food allergies, hayfever in dogs tends to be seasonal and worsens during the warmer months—usually spring through autumn.

Signs a Dog Has Hayfever

Dogs don’t always sneeze when they have hayfever. The most common signs are:

• Excessive scratching
• Chewing or licking paws
• Red, inflamed skin or hot spots
• Watery, itchy eyes
• Frequent ear infections
• Rashes or hives
• Head shaking or rubbing face on furniture
• Occasional sneezing or reverse sneezing

If these symptoms appear suddenly or worsen during spring and summer, it could be due to environmental allergens like pollen or mould spores.

What Causes Hayfever in Dogs?

Dogs can be allergic to various types of pollen or airborne allergens, including:

• Tree pollen (early spring)
• Grass pollen (late spring to summer)
• Weed pollen (late summer to early autumn)
• Mould spores (especially in humid or rainy seasons)

These allergens are inhaled or come into contact with a dog’s skin or paws during walks or outdoor time.

Can Dogs Inherit Allergies?

Yes, some breeds are more genetically predisposed to hayfever and other allergies. These include:

• Labradors
• Golden Retrievers
• West Highland White Terriers
• Boxers
• Bulldogs
• Dalmatians
• German Shepherds

If your dog belongs to one of these breeds and exhibits recurring seasonal symptoms, speak to your vet about allergy testing or management options.

Can I Give My Dog Piriton?

Piriton (chlorphenamine) is one of the few human antihistamines that may be prescribed to dogs—but only under veterinary supervision.

Never give Piriton to your dog without professional advice. The correct dosage depends on your dog’s weight, age, and health. While it can reduce itching and inflammation, side effects like drowsiness, vomiting, or even toxicity can occur if the dose is incorrect.

Can You Give Antihistamines to Dogs?

Some human antihistamines are safe for dogs, including:

• Chlorphenamine (Piriton)
• Diphenhydramine (Benadryl)
• Cetirizine (Zyrtec)

However, many over-the-counter medications contain additives like decongestants, which are toxic to dogs. Never give your dog medication designed for humans without consulting your vet first.

Your vet might also prescribe veterinary-grade antihistamines or corticosteroids depending on the severity of the allergy.

What Are the Symptoms of Pollen Allergies in Dogs?

Pollen allergies are often mistaken for other skin or food issues. Here’s what to watch for:

• Skin redness or inflammation
• Itchy ears or frequent ear infections
• Excessive paw licking or chewing
• Loss of fur in patches
• Tear stains or eye discharge
• Behavioural changes due to discomfort

Dogs may also become more irritable or lethargic when dealing with persistent allergies.

Diagnosing Hayfever in Dogs

Vets can perform skin tests or blood tests to identify environmental allergens. However, diagnosis often begins with ruling out other causes of itching or skin irritation—like fleas, diet, or fungal infections.

If your dog’s symptoms are seasonal and return at the same time each year, hayfever is a likely cause.

How to Help a Dog With Hayfever

There are several ways to manage hayfever symptoms in dogs:

• Wipe down your dog’s coat and paws after walks to remove pollen
• Avoid walks during high pollen counts (early morning or late evening)
• Wash dog bedding frequently in hot water
• Use an air purifier indoors to reduce airborne allergens
• Bathe your dog with hypoallergenic or medicated shampoos
• Speak to your vet about antihistamines or allergy treatments

Some dogs may need immunotherapy (allergy shots) or prescription medication if symptoms are severe.

When to See a Vet

You should speak to your vet if:

• Your dog’s itching or skin irritation persists for more than a week
• There are signs of infection (oozing, smell, or sores)
• Your dog is shaking their head or scratching ears frequently
• Over-the-counter treatments aren’t improving the symptoms

Early treatment can prevent complications like skin infections and long-term inflammation.

Lifestyle Adjustments That Help

While hayfever isn’t curable, it is manageable. Minor adjustments to your dog’s routine can significantly reduce exposure to allergens:

• Limit grassy or woodland walks during peak pollen seasons
• Keep lawns trimmed to reduce pollen exposure
• Switch to grain-free or anti-inflammatory diets if recommended by a vet
• Track symptoms to identify seasonal patterns

Commissioning a pet portrait of your dogs

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If you’re looking to commemorate your dog’s place in your life, especially after navigating challenges like allergies or long-term care, a custom portrait is a lasting tribute. Take a look at our pet portfolio for inspiration.

FAQs

Can I give my dog Piriton?

Yes, but only under veterinary guidance. Piriton is sometimes prescribed for hayfever and allergies in dogs, but dosage must be specific to your dog’s weight and health.

What are the symptoms of pollen allergies in dogs?

Common signs include itching, licking paws, red eyes, skin irritation, and frequent ear infections. These symptoms often worsen during spring and summer.

Can you give antihistamines to dogs?

Some antihistamines are safe for dogs, such as chlorphenamine, diphenhydramine, or cetirizine. Always check with a vet before use, as not all human medications are suitable.