Understanding and managing your cat's allergies

May 31, 2024 - 6 min read

The information in this article has been reviewed by Dr. Jennifer Coates, DVM on May 29, 2024. Although it may provide helpful guidance, it should not be substituted for professional veterinary advice.

Close up of a furry grey cat looking lethargic, laying on a wooden floor

When your cat has allergies, life can get more difficult for both you and your furry friend.

Itching, sneezing, and other symptoms can leave your cat uncomfortable and you deeply concerned.

In this guide, we'll dive into the various aspects of cat allergies, from spotting the first signs to managing their allergies effectively.

Can cats have allergies?

Cat scratching its ears

Yes, just like humans (and dogs), cats can suffer from allergies.

They can be allergic to some of the same triggers as us, like pollen and dust mites.

But they can also suffer certain allergic reactions that most humans aren’t accustomed to, like those related to flea bites or certain foods. 

cat eyeing a piece of cheese on a table

Cat food safety

Can my cat eat...

Enjoying a slice of watermelon and wondering if your cat can have a bite? Check out our food safety database. We're adding new foods weekly!

cat eyeing a piece of cheese on a table

Recognizing allergic reactions—and understanding what might cause them in the first place—can help spare your feline friend some major discomfort.

Importance of identifying and treating allergic reactions in cats

Close up of a furry grey cat looking lethargic, laying on a wooden floor

Spotting and treating allergic reactions in cats can significantly improve their quality of life.

Allergic symptoms in cats can vary widely, from mild itching and sneezing to more severe problems such as chronic skin infections or respiratory issues.

Left untreated, these symptoms can lead to discomfort and further health complications. 

Understanding and addressing allergic reactions quickly can help your cat avoid unnecessary suffering.

Regular check-ups with your veterinarian can help catch allergies early, and proper treatment can prevent minor symptoms from escalating into serious conditions.

Even if allergies become chronic, staying attentive to your cat’s condition and treatment can help them enjoy a more comfortable life.

Types of cat allergies

A veterinarian in a white mask uses an otoscope to examine the ear of a displeased gray and white cat sitting on an examination table.

Cat allergies can come in various forms, each needing its own approach to treatment and management. Here are the most common types of cat allergies and how they can affect your kitty’s health.

Flea allergy dermatitis (FAD)

Flea life cycle

Flea allergy dermatitis is a common and uncomfortable condition for cats caused by an allergic reaction to flea saliva.

When a flea bites a cat, even a single bite can trigger an intense allergic response. The proteins in the flea's saliva act as allergens, causing severe itching and irritation. 

The itching from flea allergy dermatitis often leads to excessive scratching, biting, and licking, which can result in hair loss, open sores, and secondary skin infections.

These symptoms can be incredibly distressing for your cat. Regular prophylactic flea prevention can go a long way toward preventing the condition.

Environmental allergens

cat_ins

Environmental allergens such as pollen, dust mites, and mold can trigger allergic reactions in cats. These allergens are often found in the air or around the home and can cause a variety of feline health issues.

For instance, pollen from trees, grasses, and weeds can be particularly problematic during certain seasons, while dust mites thrive in household dust and mold can grow in damp areas.

These allergens typically lead to skin irritation that causes itching and redness, but respiratory issues like sneezing and coughing are possible too.

Cats with environmental allergies may also develop watery eyes and runny noses.

Closeup side profile of calico cat face looking at mess on carpet inside indoor house, home with hairball vomit stain and woman owner cleaning

Minimizing your cat's exposure to these allergens through regular cleaning and using air purifiers can help manage their symptoms and keep them more comfortable.

Medical management is also usually necessary since it’s impossible to completely avoid contact with many environmental allergens.

Food allergies

cat eating

Food allergies aren’t that common in cats but can lead to a variety of uncomfortable symptoms, ranging from skin problems such as itching and rashes to gastrointestinal issues like vomiting and diarrhea.

These allergies are often caused by specific ingredients in your cat's diet, usually certain protein sources like beef or fish.

Identifying the offending ingredient is a key step in managing food allergies.

This often involves an elimination diet, where potential allergens are removed from your cat's food and then gradually reintroduced to pinpoint the exact cause.

Once the allergen is identified, adjusting your cat's diet to avoid it can help alleviate symptoms and improve their overall health.

Signs and symptoms

By staying attentive to the symptoms of feline allergies, you can help your cat receive early diagnosis and treatment.

Just be aware: Cats may exhibit a range of behavioral and physical changes when experiencing allergies. 

Behavioral and physical indications of allergies in cats

Aggressive kittens

Cats with allergies may show noticeable changes in behavior, including:

  • Increased scratching, licking, or grooming: Cats often respond to itchiness or discomfort caused by allergens through excessive scratching, licking, or grooming. This behavior can lead to secondary skin problems if not addressed promptly.

  • Irritability or withdrawal: When cats are uncomfortable due to allergies, they may become more irritable or withdrawn. You might notice your normally social cat hiding more often or acting out in frustration.

white and orange kitten with green eyes peeks out from behind a hiding spot in a basket

Cats with allergies can also experience physical symptoms, such as:

  • Redness and swelling: Allergic reactions can cause visible redness, swelling, and inflammation on your cat's skin, especially around the ears, face, and paws. These signs are often seen in areas where the cat scratches or licks frequently, indicating irritation and inflammation.

  • Hair loss: Cats with allergies may develop bald spots from excessive grooming. This hair loss is usually localized to areas that are particularly itchy, and it can lead to noticeable patches of missing or thin fur.

  • Ear infections: Recurrent or chronic ear infections can be a sign of allergies. If your cat frequently shakes their head or scratches at their ears, it might be due to underlying allergies.

A cut out of a cat scratching it's ear, with a white outline, on a light pink background

  • Sneezing and watery eyes: Similar to human allergies, cats can experience sneezing and watery eyes. These respiratory symptoms indicate that your cat may be reacting to airborne triggers like pollen or dust.

  • Vomiting or diarrhea: Although the skin is still the primary site for symptoms associated with food allergies, gastrointestinal problems can also be seen. 

Remember, your cat’s veterinarian plays a vital role in diagnosing and managing their allergies. If you notice any of these allergy symptoms, get your cat to their vet. Moreover, regular check-ups can help you catch allergic reactions quickly. 

How to treat allergies in cats

Treating allergies in cats involves a combination of medical interventions and lifestyle adjustments. Addressing the root cause of the allergy and managing symptoms effectively can significantly improve your cat's quality of life. 

Medications for managing allergic symptoms in cats

Medications can help control allergic reactions and provide relief for your cat.

Veterinarians may prescribe corticosteroids, antihistamines, nutritional supplements, immunotherapy, and other treatments to reduce symptoms such as itching, swelling, and inflammation. 

Always consult your veterinarian before administering any medication to make sure it’s safe and appropriate for your cat's specific condition.

CTA _1

Top-notch cat insurance

Thinking about insurance? Meow is the time.

ManyPets can reimburse you for unexpected accidents and illnesses with no hidden fees or annual payout limits.

CTA _1

Environmental management techniques to reduce allergen exposure

Managing your cat's environment is crucial in minimizing exposure to allergens.

Regular cleaning, using air purifiers, and reducing dust and mold can help create a healthier space.

Make sure your cat's bedding, toys, and feeding areas are kept clean and free from potential allergens. 

Cat on light pink background licking a bandage on it's paw

Allergic triggers like pollen or mold spores also get trapped in a cat’s fur. Frequent bathing is an important part of the treatment plan for cats with environmental allergies.

Dietary adjustments for cats with food allergies

If your cat has food allergies, you’ll need to work with your vet to create a balanced and nutritious diet plan that avoids triggering ingredients while providing necessary nutrients.

(There’s also some evidence that introducing omega-3 fatty acids into your cat's diet can help alleviate inflammation and support skin health.)

Again, your vet may recommend an elimination diet to try to identify what’s causing the allergic reaction.

Common allergens like beef, dairy,chicken, and fish are usually the first to go, as these often trigger feline food allergies.

Your vet might then recommend novel or hydrolyzed protein sources that are less likely to cause reactions. 

Preventive measures

Preventing allergic reactions in cats involves proactive steps to minimize exposure to allergens.

By taking preventive measures, you can help keep your cat comfortable and reduce the likelihood of allergic flare-ups. 

Flea prevention and environmental modifications

To reiterate, fleas are a common cause of allergies in cats. Regular use of flea prevention treatments, such as topical solutions or oral medications, can help keep these pests at bay.

And making some of the changes to your cat's environment that we’ve already explored—like maintaining a clean environment—can significantly reduce exposure.

Vacuum your home and wash your cat's bedding regularly. And again, regular bathing is helpful, as it can reduce allergens that are trapped in your cat’s coat.

Choosing hypoallergenic products for cats

If your cat has allergy symptoms, you might consider consulting your vet about which hypoallergenic or medicated products you can switch to.

These could include cat litters, shampoos, and grooming tools to minimize the risk of allergic reactions. Such products are designed to be soothing to your cat's skin and are less likely to cause irritation.

The importance of grooming

two photos side by side of a brown Persian cat being brushed by a hand

Regular grooming is vital for managing allergies in cats because it helps remove allergens from their coat and skin, reducing their exposure to irritants.

Grooming not only keeps your cat clean but also allows you to check for signs of allergies such as redness, swelling, or unusual grooming patterns. 

By brushing your cat regularly, you can help eliminate loose fur, dirt, and dander that can exacerbate allergic reactions.

And bathing them with hypoallergenic or medicated shampoos can soothe irritated skin and wash away environmental allergens. 

On a related note, providing your cat with plenty of play and enrichment can help minimize stress and reduce the risk of over-grooming, which can exacerbate allergy symptoms.

Insuring a healthy future for your cat

While addressing your cat's allergies, it's wise to consider the financial aspect of their healthcare.

Allergies are often chronic conditions that require frequent treatments, medications, and veterinary visits throughout your cat's life.

Cat insurance can be a valuable resource in covering these ongoing costs. 

CTA _1

Top-notch cat insurance

Thinking about insurance? Meow is the time.

ManyPets can reimburse you for unexpected accidents and illnesses with no hidden fees or annual payout limits.

CTA _1

To avoid any pre-existing condition exclusions, it's best to get your pet insured while they're young.

By maintaining continuous coverage, you'll make sure your cat remains protected without the risk of losing coverage for their allergies as they age.


David Teich
Lead Editor

David oversees content strategy and development at ManyPets. As Lead Editor, he focuses on delivering accurate information related to pet care and insurance. David’s editorial background spans more than a decade, including a pivotal role at Digiday, where he wrote content and managed relationships with media and tech companies. As an Associate Editor at Cynopsis Media, David wrote the Cynopsis Digital newsletter and interviewed executives and digital marketing experts in the TV industry. His background also includes film journalism. His diverse experiences in journalism and marketing underpins his role in shaping content within the pet care industry.