Allergies in Dogs & Cats: Diagnosis & Relief
Itching, scratching, ear infections, and skin problems—allergies are one of the most common health issues affecting pets. If your dog or cat is constantly licking, scratching, or experiencing skin irritation, allergies may be the cause. At Eastex Veterinary Clinic in Humble, TX, we diagnose the underlying cause of allergies and develop treatment plans that bring relief.
Allergies aren’t just uncomfortable; untreated allergies can lead to serious secondary infections and significantly impact quality of life. We’re here to help your pet feel better.
Types of Pet Allergies
Pets can be allergic to almost anything. We commonly see three main types of allergies:
1. Food Allergies
Food allergies occur when your pet’s immune system reacts to a specific ingredient in their diet. Common culprits include chicken, beef, dairy, wheat, and corn. Food allergies can develop at any age, even if your pet has eaten the same food for years.
2. Environmental (Atopic) Allergies
These result from inhaling allergens like pollen, mold, dust mites, or grass. Seasonal allergies are common, with many pets experiencing flare-ups during specific times of year. However, some pets have year-round environmental allergies.
3. Contact Allergies
Some pets react to substances that touch their skin—certain materials, cleaning products, or plants. These are less common than food or environmental allergies but still possible.
Signs Your Pet Has Allergies
Allergy symptoms in pets vary but commonly include:
- Excessive itching, licking, or chewing on paws, legs, or skin
- Red, inflamed, or irritated skin
- Hair loss from over-grooming
- Ear infections or head shaking
- Chronic ear infections
- Waxy or smelly ears
- Vomiting or diarrhea (especially with food allergies)
- Frequent sneezing or runny nose
- Excessive licking of lips or face
- Rashes or hives on the skin
- Behavioral changes due to discomfort
If you notice any of these signs, bring your pet in for evaluation. Allergies don’t resolve on their own and often worsen without treatment.
How We Diagnose Allergies
Diagnosing allergies requires careful investigation. We start with a thorough history and physical exam, looking for skin changes and infection patterns.
Elimination Diet Trial
If we suspect food allergies, we recommend an elimination diet using a novel protein source for 8-12 weeks. If symptoms improve, we’ve identified food as the trigger.
Allergy Testing
Intradermal allergy testing identifies specific environmental allergens. We inject small amounts of common allergens under the skin and observe reactions. This helps us create targeted treatment plans.
Blood Allergy Testing
Serum allergen-specific IgE testing identifies allergen sensitivities through blood work. This option is useful for pets who can’t undergo skin testing.
Skin Cultures and Examinations
Sometimes we need to rule out fungal or bacterial infections. Skin scrapings or fungal cultures confirm or rule out these conditions.
Allergy Treatment Options
Once we identify the allergen, we develop a treatment plan to eliminate it and manage symptoms.
Environmental Management
For environmental allergies, reduce exposure by:
- Using air filters in your home
- Regular bathing to remove allergens from coat and skin
- Limiting outdoor time during high pollen seasons
- Washing bedding frequently
Dietary Management
For food allergies, switch to a hypoallergenic diet with novel proteins (like duck, venison, or fish) that your pet hasn’t eaten before. We can recommend appropriate diets and provide guidance on transitioning.
Medications
We prescribe several medication options depending on allergy severity:
- Antihistamines: Similar to human allergy medications, these reduce allergic responses
- Anti-itch medications: Newer prescription medications like apoquel or cerenia provide quick relief
- Steroids: Short-term corticosteroids reduce severe inflammation and itching
- Antibiotics: Treat secondary bacterial infections from scratching
Topical Treatments
Medicated shampoos, sprays, and ointments soothe irritated skin and reduce itching. We recommend products appropriate for your pet’s specific condition.
Immunotherapy
For severe environmental allergies, immunotherapy (allergy shots) may help desensitize your pet to specific allergens over time. This involves gradual exposure to increasing allergen doses.
Long-Term Management
Most allergies require ongoing management rather than cure. We work with you to:
- Minimize allergen exposure
- Prevent flare-ups with seasonal preventatives
- Manage symptoms when they occur
- Monitor for secondary infections
- Adjust treatment as needed
Regular check-ins help us catch complications early and ensure your pet stays comfortable.
Allergy Relief Questions?
How long does an elimination diet take to show results?
Most pets show improvement within 4-6 weeks if food is the allergen. However, we recommend continuing for 8-12 weeks for definitive diagnosis. Be patient—improvement is gradual.
Can allergies be cured?
Allergies typically can’t be cured permanently, but symptoms can be effectively managed through avoidance, medication, and lifestyle changes.
Are antihistamines safe for pets?
Yes, antihistamines are generally safe when prescribed by a veterinarian. We choose medications and dosages appropriate for your pet’s health.
Can my pet have both food and environmental allergies?
Yes, some pets have multiple allergies. We identify all triggers to develop a comprehensive management plan.
What’s the difference between allergy testing methods?
Intradermal testing is very accurate for environmental allergies. Blood testing is convenient but sometimes less specific. We recommend the best option based on your pet’s situation.
How often should I bathe an allergic pet?
We may recommend weekly or bi-weekly bathing with medicated shampoo during flare-ups to remove allergens and soothe skin. Regular baths help prevent secondary infections.
Will my pet always need medication?
This depends on the allergen and severity. Some pets need year-round medication; others need it seasonally. We’ll develop a personalized plan for your pet.