Pet Allergies in Texas: Signs Your Dog or Cat May Need Allergy Testing

Key Points:

• Pet allergies are extremely common in Texas due to year-round pollen, heat, and humidity 
• Constant scratching, licking, and biting at skin is the most visible sign of allergies, but allergies also cause ear infections, vomiting, and diarrhea 
• Dogs and cats develop allergies to pollen, dust mites, mold, food, and contact allergens (grass, cleaning products, fabrics) 
• Many pet owners treat symptoms without identifying the underlying allergy, leading to chronic infections and escalating problems 
• Allergy testing identifies specific allergens so treatment can target the actual cause 
• Environmental allergies are seasonal in other states but year-round in Texas due to the climate 
• Early allergy diagnosis prevents secondary skin infections, ear problems, and improves quality of life for your pet 

If you live in Texas and own a pet, you've probably noticed: scratching. Lots of scratching. Your dog chews their paws constantly. Your cat licks their legs until the fur is thin. You might have assumed this is just normal pet behavior, something all dogs and cats do. The truth? Excessive scratching is a sign something is wrong, and in Texas, that something is usually allergies. 

Pet allergies are incredibly common, affecting roughly 10-15% of dogs and 8-12% of cats. But in Texas, those numbers feel higher. Our unique climate, year-round growing season, and high humidity create the perfect environment for allergens to thrive and for pets to suffer. 

Let's talk about what pet allergies look like, why Texas pets are especially prone, and how allergy testing can finally give your itchy pet relief.

The Three Types of Pet Allergies

Pet allergies fall into distinct categories, and knowing which type your pet has helps guide treatment. 

Environmental Allergies (Atopy) 

What causes them: Pollen from trees, grasses, and weeds; dust mites; mold spores; and other airborne particles. 

Why Texas is a problem: Our extended warm season means plants are pollinating longer. We have pollen year-round, not just spring and fall. Plus, high humidity creates ideal conditions for mold and dust mites to thrive. 

Seasonal pattern in Texas: Often year-round, though some peaks occur during spring (February-April) and fall (September-October). Summer and winter don't offer much relief. 

Classic signs: Itching, scratching, licking, biting at skin and paws; ear infections; red, inflamed skin; hair loss; rubbing face on furniture. 

In cats: Often shows as excessive grooming, hair loss, or skin scabs (rather than obvious scratching like dogs). 

Food Allergies 

What causes them: Reaction to specific proteins or ingredients in food. Common culprits include chicken, beef, dairy, wheat, corn, and soy. 

Pattern: Year-round (doesn't vary seasonally). 

Classic signs: Itching and scratching like environmental allergies, PLUS digestive symptoms (vomiting, diarrhea, gas, loose stool). Food allergies often cause ear infections too. 

Important distinction: True food allergies differ from food intolerances. An intolerance causes digestive upset without the immune system overreacting. An allergy triggers immune response and itching. 

Contact Allergies 

What causes them: Direct contact with irritating substances. Examples include grass, certain cleaning products, shampoos, fabrics, flea collars, or plastic food bowls. 

Pattern: Depends on exposure frequency. 

Classic signs: Itching in areas that contact the allergen (paws if walking in certain grass, face if using certain shampoo, belly if lying on treated fabric). 

Common Signs Your Pet Has Allergies

Here's what allergies actually look like. Not all allergic pets show all these signs, but most show several. 

Why Texas Pets Get Allergies Year-Round 

If you grew up in another state and moved to Texas, you probably noticed something: allergies here are different. Your pet (or you) might have never had problems before, but now? Constant issues. 

Here's why Texas is an allergy hotspot: 

Extended growing season: Texas stays warm long enough for plants to pollinate almost continuously. Cedar (the big culprit) pollinates December through February. Ragweed goes August through November. Grass pollens hit spring through fall. There's barely a break. 

High humidity: Our humid climate is perfect for mold spores and dust mites. These thrive in air conditioning, bedding, and carpet. 

Diverse plant life: Texas has oak, pecan, pine, mesquite, and countless other trees and grasses. The allergen load is massive compared to states with shorter growing seasons. 

Indoor/outdoor lifestyle: Many Texas pets spend time both indoors (air conditioning, dust) and outdoors (pollen, grass, mold). They're exposed to multiple allergen sources constantly. 

No winter break: In northern states, winter brings relief because plants stop pollinating. Texas doesn't get that break. Pets with seasonal allergies elsewhere become year-round sufferers in Texas. 

Secondary Infections: The Domino Effect

Here's what makes allergies worse: the scratching. Constant itching causes micro-tears in skin, which bacteria and yeast colonize. Suddenly, your pet doesn't just have allergies. They have allergies plus a bacterial or yeast infection on top. 

Now you're dealing with: 

• Smelly skin 
• More intense itching (infection makes it worse) 
• Oozing, crusty lesions 
• Pain beyond the original allergy itch 
• Antibiotic or antifungal requirements 
• Higher treatment costs 

This is why untreated allergies spiral. Treat the allergy early, before secondary infection develops, and you prevent this cascade. 

Allergy Testing: How It Works and Why It Matters 

If your pet has allergy symptoms, allergy testing identifies exactly what they're reacting to. 

Two Types of Allergy Testing 

Intradermal testing (IDAT): Small amounts of allergen are injected into the skin. If the pet reacts (wheal develops), they're allergic to that substance. Takes about 15 minutes and requires sedation for cats or anxious dogs. 

Serologic testing (blood test): Blood is drawn and tested for antibodies to specific allergens. No sedation needed, results take several days. 

Both have pros and cons, and Dr. Joy will recommend which is best for your pet. 

What Allergy Testing Identifies 

Testing can identify reactions to: 

• Tree pollens (oak, cedar, pine, pecan, etc.) 
• Grass pollens 
• Weed pollens (ragweed, plantain, etc.) 
• Dust mites 
• Mold species 
• Pet dander (other pets) 
• Common contact allergens 

Food allergies typically require elimination diets rather than testing, since food allergy blood tests aren't always reliable. 

Why It's Worth the Cost 

Allergy testing costs $200-400 depending on the type and number of allergens tested. That sounds expensive until you consider: 

• Untreated allergies lead to chronic ear infections ($300-500 per treatment episode, multiple times yearly) 
• Skin infections from scratching require antibiotics ($200-400 per course, sometimes repeated) 
• Secondary yeast infections need antifungal treatment ($150-300) 
• Ongoing pain management for uncomfortable pets 
• Reduced quality of life for your itchy, uncomfortable pet 

One round of allergy testing often costs less than treating one ear infection, and it solves the actual problem instead of just managing symptoms. 

Treatment Options Once Allergies Are Identified 

Once you know what your pet is allergic to, treatment becomes targeted. 

Environmental Allergies 

Avoidance: Limit exposure when possible (stay inside on high pollen days, rinse paws after outdoor time, use air filters). 

Medications: Antihistamines (like Apoquel or Atopica) reduce immune reaction and itching. 

Immunotherapy (allergy shots or sublingual drops): Gradually expose the pet to small doses of allergens, building tolerance over time. Takes months to work but can significantly reduce or eliminate symptoms long-term. 

Topical treatments: Medicated shampoos, sprays, or wipes reduce itching and prevent infection. 

Environmental management: Air purifiers, frequent cleaning, dust-proof bedding covers. 

Food Allergies 

Elimination diet: Feed a novel protein (one your pet has never had) for 8-12 weeks to see if symptoms resolve. Common novel proteins include duck, venison, rabbit, or hydrolyzed proteins. 

Prescription diet: Specially formulated foods for allergic pets with limited ingredients. 

Supplementation: Omega-3 fatty acids reduce inflammation and support skin health. 

Ear Infections (Secondary to Allergies) 

Treating the underlying allergy prevents recurring ear infections. But active infections need treatment: 

Cleaning: Professional ear cleaning to remove debris and wax buildup. 

Medicated drops: Antibacterial or antifungal drops target the infection. 

Oral medication: Antibiotics or antifungals if infection is severe. 

When to See a Vet for Allergy Concerns



Home Care While Awaiting Diagnosis

While you're getting your pet evaluated for allergies: 

Bathe regularly: Weekly baths with lukewarm water and gentle shampoo rinse away allergens and soothe irritated skin. Skip harsh or medicated shampoos until diagnosed. 

Rinse paws: After outdoor time, rinse feet with plain water to remove pollen and allergens. 

Reduce exposure: Keep windows closed during high pollen times. Use air conditioning with clean filters. 

Supplement: Omega-3 fatty acids (fish oil) reduce inflammation and support skin. Ask about appropriate dosing for your pet's weight. 

Avoid triggers: If you suspect contact allergy, remove the potential culprit (certain grass, cleaning product, toy, bedding). 

Don't self-treat: Avoid giving supplements, medications, or home remedies without vet guidance. Some can interact with future allergy treatment. 

Frequently Asked Questions About Pet Allergies in Texas

Can pets outgrow allergies? 

No. Allergies are lifelong once they develop. However, managing them well (avoidance, medication, immunotherapy) can minimize symptoms. Some pets on successful immunotherapy experience significant improvement or even remission of symptoms. 

Is my pet's itching definitely allergies? 

Not necessarily. Parasites (fleas, mites, lice), fungal infections (ringworm), bacterial infections, and other conditions cause itching too. That's why vet evaluation is important. Dr. Joy will rule out other causes before recommending allergy testing. 

Why does my cat seem itchy but doesn't scratch like my dog? 

Cats show itching differently. They over-groom, which often goes unnoticed as "normal cat grooming." You might not see obvious scratching but notice hair loss, skin scabs, or overgrooming behavior. Cats are more subtle about discomfort. 

Can I just give my pet antihistamines without vet testing? 

You could try, but it's not ideal. Antihistamines work for some pets but not all. Knowing what your pet is actually allergic to allows targeted treatment that works better. Plus, some conditions look like allergies but need different treatment entirely. 

Is food allergy testing accurate? 

Blood tests for food allergies have mixed accuracy and aren't always reliable. The gold standard for food allergies is an elimination diet where you feed a novel protein for 8-12 weeks and see if symptoms resolve. It takes longer but is more accurate. 

Will allergy treatment be expensive forever? 

Initial testing and diagnosis have upfront costs, but long-term management depends on which treatment works for your pet. Some pets do well on affordable antihistamines. Immunotherapy costs more upfront but often reduces other treatment needs. Managing allergies is usually cheaper than treating repeated infections from untreated allergies. 

Why does my pet's allergy seem worse in summer even though I thought it was pollen allergies? 

Heat and humidity worsen any itching condition, allergies included. Even if the primary allergen is less prevalent in summer, heat and moisture cause skin inflammation and secondary infections. Plus, dust mites and mold thrive in heat and humidity. 

Can I give my pet Benadryl like people take? 

Never give human medications without vet guidance. Dosing is different for pets, some pets have health conditions where antihistamines are unsafe, and there are pet-appropriate alternatives that work better. Call us before giving any medication. 

Frequently Asked Questions About Castle Hills Animal Hospital 

Do you offer allergy testing? 

Yes! We provide allergy testing services to identify exactly what your pet is allergic to. Once identified, we can develop a targeted treatment plan. 

What type of allergy testing do you do? 

We offer both intradermal testing and serologic (blood) testing. Dr. Joy will recommend which is best based on your pet's situation, temperament, and symptoms. 

How long does allergy testing take? 

Intradermal testing takes about 15 minutes. Blood tests are quick for the draw, but results come back in a few days. Either way, the whole process is straightforward. 

Can I get a same-day appointment if my pet is scratching a lot? 

Yes! Call us at (469) 962-2060 early in the day. Pets with signs of infection or severe itching are prioritized for same-day care. 

Do you treat allergies or just test for them? 

We both test for allergies and treat them. Once we identify what your pet is allergic to, we'll discuss treatment options including medication, diet changes, immunotherapy, or environmental management. 

Where is Castle Hills Animal Hospital located? 

We're at 3964 TX-121 #100, Lewisville, TX 75056, serving Lewisville and surrounding areas. You can call (469) 962-2060 or book an appointment online. 

Stop the Itch Cycle

That constant scratching isn't normal pet behavior. It's not something your pet just has to live with. And it's definitely not something to ignore hoping it goes away on its own. 

In Texas, allergies are nearly inevitable for many pets. But once identified, they're highly manageable. Your itchy dog can go from constant scratching to comfortable. Your over-grooming cat can have healthy skin and a full coat. The key is getting proper diagnosis and targeted treatment. 

At Castle Hills Animal Hospital in Lewisville, we understand Texas pet allergies and know how to help. Whether your pet needs allergy testing to identify triggers, medication to manage symptoms, or a comprehensive treatment plan to finally provide relief, we're here. 

If your pet is scratching excessively, experiencing ear problems, or showing signs of allergies, call us at (469) 962-2060 or book an appointment today. Let's identify what's bothering your pet and get them comfortable again. 

Because your pet deserves to be itchy-free and happy. 

Castle Hills Animal Hospital provides same-day and emergency care for cats in Lewisville, Texas. Dr. Joy and our team are here when your cat needs us.

Disclaimer: The information provided on this blog is for general informational purposes only and is not intended as, and should not be considered, medical advice. All information, content, and material available on this blog are for general informational purposes only. Readers are advised to consult with a qualified healthcare professional for medical advice, diagnosis, or treatment. The author and the blog disclaim any liability for the decisions you make based on the information provided. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.