How to Spot Seasonal Allergies in Dogs: Symptoms, Treatments, and Prevention

Seasonal allergies in dogs affect 10–15% of dogs and occur when their immune system reacts to environmental allergens like pollen, mold, or grass. These allergens, harmless to most dogs, trigger symptoms such as itching, sneezing, and red skin, particularly during spring, summer, and fall.

Approximately 70% of seasonal allergy cases in dogs are caused by airborne allergens, with the rest triggered by contact or ingestion. Common causes include:

Pollen: Released by trees, grasses, and weeds, it’s a major allergen during spring and summer.

Grass and Weeds: Direct contact or inhalation can irritate skin and respiratory passages.

Mold and Mildew: Thrive in damp areas, especially during rainy seasons or fall.

Dust Mites: Found indoors, these worsen with seasonal changes.

Pro Tip: If your dog’s symptoms flare up during specific months, track their outdoor exposure to identify potential triggers.

What Are the Symptoms of Seasonal Allergies?

More than 80% of dogs with seasonal allergies show these common symptoms:

Excessive Scratching or Chewing: Often focused on the paws, belly, or ears.

Red or Inflamed Skin: Especially noticeable on the belly, groin, or armpits.

Sneezing or Runny Nose: Frequently caused by airborne allergens like pollen.

Watery or Itchy Eyes: Dogs may paw at their face or rub against furniture.

Recurring Ear Infections: Inflammation in the ear canal is a telltale sign.

Hot Spots: Raw or sore skin caused by persistent licking or scratching.

Pro Tip: Seasonal symptoms that repeat annually are likely caused by environmental allergens. Keeping a journal of symptoms and their timing can help you identify patterns. If you’re curious to learn more about recognizing and managing recurring ear infections, read our detailed guide here.

When Should You Visit a Vet?

If your dog’s symptoms last for more than 2 weeks or seem to worsen despite basic care, it’s time to consult a veterinarian. Signs of secondary infections, such as sores or discharge, also warrant immediate attention.

What Tests Can Confirm Seasonal Allergies?

Your vet may use these methods to diagnose allergies:

Physical Examination: Checks for inflamed skin, irritated ears, or redness.

Allergy Testing: Skin or blood tests identify specific allergens.

Rule Out Other Conditions: Fleas, mites, and skin infections can mimic allergy symptoms.

Pro Tip: Provide your vet with a detailed log of symptoms, environments, and changes in your dog’s routine to aid in diagnosis.

What Are the Most Effective Treatments for Allergies?

About 60–70% of dogs with seasonal allergies respond well to these treatments:

1. Antihistamines

   • Effective for mild symptoms like itching or sneezing. Consult your vet for dosage.

2. Medicated Shampoos

   • Wash away allergens and soothe irritated skin with hypoallergenic or medicated shampoos.

3. Omega-3 Fatty Acids

   • Found in fish oil, these reduce inflammation and improve skin health over time.

4. Steroids

   • Used for severe reactions to control inflammation and itching.

5. Immunotherapy (Allergy Shots)

   • A long-term solution that gradually desensitizes your dog to specific allergens.

Pro Tip: Track your dog’s response to treatments and share updates with your vet to fine-tune their care plan.

Use Dosty’s Symptom Checker if you suspect your dog has seasonal allergies. Download for free.

Can You Reduce Your Dog’s Exposure to Allergens?

While it’s impossible to completely avoid allergens, you can reduce exposure by following these preventive measures:

Top Prevention Tips

Wipe Paws After Walks: Use a damp cloth to clean your dog’s paws and coat after outdoor activities.

Frequent Baths: Bathe your dog with hypoallergenic shampoo every 1–2 weeks during allergy season.

Clean Living Spaces: Vacuum carpets, wash bedding, and use air purifiers to reduce indoor allergens.

Avoid High-Pollen Times: Walk your dog early in the morning or late evening when pollen counts are lower.

Strengthen Their Diet: A balanced diet with omega-3 fatty acids can support a healthier immune system.

Pro Tip: If symptoms persist despite preventive efforts, consult your vet for additional strategies or allergy testing.

What Time of Year Are Seasonal Allergies Worst?

Spring and fall are typically the worst seasons due to high pollen counts and increased mold growth.

Are Certain Breeds More Prone to Allergies?

Yes, breeds like Golden Retrievers, Labradors, Bulldogs, and Terriers are more likely to develop seasonal allergies.

Can Dogs Outgrow Seasonal Allergies?

Dogs don’t outgrow allergies, but their symptoms can often be managed effectively with the right treatments.

Can I Use Over-the-Counter Allergy Medications for My Dog?

Only under veterinary guidance. Some human medications, like Benadryl, can help but must be dosed correctly.

Seasonal allergies affect millions of dogs but are manageable with the right care. Early detection is key—look for symptoms like scratching, sneezing, and red skin, and take steps to reduce allergen exposure.

If you’re unsure how to proceed or need a clear action plan, keeping a symptom journal can help you identify triggers and tailor treatments to your dog’s needs. With proper care, you can help your dog enjoy every season comfortably and happily.