What are the main types of cat allergies?

The main types of cat allergies are A) food allergies and B) environmental allergies. They tend to manifest a little differently. Environmental allergies tend to be seasonal, whereas food allergies are persistent throughout the year. Food allergies also often cause concurrent issues with digestion, unlike environmental allergies.

Dr. Matt Novarr

How do these allergies affect cats?

Both types of allergies can cause itchiness. In cats, the most common places they itch are their bellies. They also tend to get chronic ear infections and might have anal gland issues as well. Cats dealing with chronic allergies are uncomfortable; they lick their bellies and pull their hair out. They can get bacterial infections on their skin due to excessive grooming.

What are some symptoms of allergies in cats?

  • Excessive grooming or overgrooming 
  • Itching, especially around the face, ears, and neck
  • Small scabs or bumps on the skin
  • Hair thinning or bald patches
  • Ear irritation or infections

Can cat allergies be self-diagnosed?

There's no real way to self-diagnose allergies. Nothing you're going to give at home is really going to help them. By trying to give things like antihistamines, which may be safe but may not help, we're potentially delaying actual treatment, and the clinical signs can get worse.

What are the treatment options for cat allergies?

Treatment depends on the type of allergies. If we suspect a food allergy, we switch to either a novel protein or a strict hypoallergenic diet for a couple of months to see results. If we're dealing with environmental allergies, sometimes we'll use steroids. For long-term treatment, we might use a medication like Atopica. The treatment varies on a case-by-case basis, and there's no set treatment for any cat with allergies. Sometimes, it takes experimentation to find the right combination of medications and treatments that work for them. This is something we manage long-term, as we don't cure the allergies; we manage them.

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Frequently Asked Questions About Cat Allergies

What are common signs of allergies in cats?
Cats with allergies often show excessive scratching, skin redness or sores, hair loss, frequent sneezing, watery eyes, vomiting, or diarrhea. Some cats also develop recurring ear infections as a result of allergies.

What causes allergies in cats?
Common triggers include environmental allergens such as pollen, mold, and dust mites, food ingredients, flea saliva, and certain household products. Identifying the specific trigger is the first step in treatment.

Can indoor cats develop allergies?
Yes. Indoor cats are frequently exposed to dust mites, mold, and certain foods that can cause allergic reactions. Being indoors does not protect a cat from developing allergies.

How are cat allergies diagnosed?
We use a combination of physical examination, dietary elimination trials, skin testing, and bloodwork to identify the cause of your cat allergic reactions.

What treatment options are available?
Treatment depends on the allergen involved and may include dietary changes, allergy medications, topical treatments, or immunotherapy. Many cats respond well once the trigger is identified and managed.