Dogs can suffer from seasonal allergies just as humans do, and the symptoms can be just as uncomfortable. While identifying allergy symptoms is the first step, understanding how allergies are diagnosed and what treatment options are available is what leads to lasting relief. Here is what to know about diagnosing and treating seasonal allergies in dogs.
Common Seasonal Allergens for Dogs
Seasonal allergens are substances in the environment that trigger allergic reactions. The most common seasonal allergens for dogs include pollen, grass, weeds, mold, fungi, and flea saliva. These allergens are most prevalent in the spring and fall, which is why dogs with seasonal allergies tend to be most symptomatic during those periods and more comfortable during the summer and winter.
How Seasonal Allergy Symptoms Differ in Dogs
Dogs share some allergy symptoms with humans, including coughing, wheezing, red itchy eyes, stuffy or runny nose, and sneezing. However, the most significant difference is that dogs are far more likely to develop skin reactions. Common skin-related allergy symptoms include itchy flaky skin, patchy hair loss, constant ear itching or head shaking with an odor from the ears, and frequent licking of the paws and anal area. In dogs, skin symptoms are often the most prominent and persistent sign of seasonal allergies.
Why Secondary Infections Are a Concern
One of the primary risks of allergy-related skin reactions is that they can lead to secondary infections. When a dog constantly licks and scratches irritated skin, they can break the skin barrier and create conditions for bacterial or yeast infections to develop. These secondary infections require their own treatment — often prescription antibiotics or anti-yeast medication — in addition to managing the underlying allergy. This is why addressing allergy symptoms early, before excessive scratching causes additional damage, is important for preventing more serious complications.
Seasonal Allergies vs. Food Allergies
Distinguishing between seasonal and food allergies is an important part of diagnosis. Seasonal allergies are triggered by environmental allergens like pollen, mold, and grass, and their symptoms tend to appear or worsen as the seasons change — most commonly in the spring and fall. Food allergies, by contrast, produce symptoms that are typically present year-round since the trigger is in the diet rather than the environment. However, sudden food allergy symptoms can also appear if you change dog foods or if a food manufacturer changes their recipe. This seasonal-versus-year-round pattern is one of the key clues veterinarians use to determine which type of allergy is involved.
How Seasonal Allergies Are Diagnosed
Seasonal allergies in dogs can be formally diagnosed through an intradermal skin test. This is the same type of allergy test used for humans — small amounts of specific allergens are injected into the skin, and the veterinarian observes for reactions such as swelling, hives, or redness. While the process involves mild discomfort for your dog, the results allow your veterinarian to identify the exact allergens triggering the symptoms. Following the test, your vet can create a customized allergy shot (immunotherapy) protocol designed to desensitize your dog's immune system to those specific allergens over time.
Treatment Options for Dog Seasonal Allergies
The first step is always a veterinary visit to confirm that your dog's symptoms are allergy-related and to rule out other potential causes. Once seasonal allergies are confirmed, several treatment options are available.
Allergy shots (immunotherapy). Based on the results of allergy testing, your veterinarian can develop a customized immunotherapy protocol. Allergy shots gradually desensitize your dog's immune system to specific allergens, providing longer-term relief.
Prescription medications. Depending on the severity of your dog's symptoms, your veterinarian may prescribe medications such as Prednisone (a corticosteroid to reduce inflammation), Cytopoint (an injectable that targets itch-causing signals), or Apoquel (an oral medication that reduces itching and inflammation). Each has different benefits and considerations that your vet can discuss with you.
Antihistamines. Over-the-counter antihistamines may be recommended by your veterinarian, but you should never give them to your dog without veterinary guidance first. The dosage for dogs differs from humans, antihistamines can cause drowsiness or hyperactivity in dogs, and some products contain ingredients that are unsafe for dogs — such as decongestants or pseudoephedrine. Your vet can recommend the safest option and correct dosage.
Frequent bathing. Bathing your dog more frequently during allergy season helps remove allergens from the skin and coat, reducing irritation and the urge to scratch.
Environmental controls. While controlling outdoor allergens is difficult, you can reduce indoor exposure by using HEPA filters in your heating and cooling system and keeping windows and doors closed during high-pollen periods.
Allergy supplements. DermaBliss Advanced Seasonal Allergy Health Chews provide daily allergy and immune support to help manage symptoms alongside veterinary treatment. For Omega-3 skin support, DermaBliss Omega Skin Supplement provides essential fatty acids that support healthy skin. Browse the full DermaBliss allergy and skin care collection for additional options.
Are There Natural Remedies for Dog Allergies?
Some natural approaches may provide supplemental relief, but as with any remedy, consult your veterinarian to determine what is safe and appropriate for your specific dog. Natural options should complement — not replace — veterinary diagnosis and treatment.
