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Cat Allergies

Allergies in Cats

Allergies are a common problem in cats. Most humans with allergies sneeze or have nasal congestion or asthma. Cats may have asthma with allergies but it is far more common for them to scratch or lick. Since cats groom or lick so much of the time anyway, when can you know that it is abnormal and needs to be treated? If your cat is developing areas of hair loss or you can feel scabs or sores on your kitty, then you need to give us a call.

Causes of Allergies in Cats


The number one (and two and three, etc…) cause of allergies in cats is fleas. Many clients say that they never see fleas on their cat or that the cat stays indoors. Cats are such meticulous groomers that it can be very difficult to find fleas on them. That does not mean that the flea did not have a chance to bite the cat before it was groomed off. Yes, even completely indoor cats can get fleas. The source can be other pets that go in and out or a flea can “hitch hike” inside on you. We have even had clients who developed flea problems after either raccoons or opossums took up residence in their wall or under the house.

Over the counter flea products are not very effective in flea allergic cats.

Environmental Allergens

Many cats are allergic to the same things in the environment (pollens, dust, molds) that we are. Although they may sneeze or be congested, they will more likely be itchy and lick or scratch.


Cats are less commonly allergic to food items than fleas or environmental allergens. These kitties frequently rub their faces incessantly.


Some cats can develop a quite severe allergy to the bite of the mosquito. That is an unfortunate problem in our south Louisiana mosquito haven. These cats typically have severe lesions on their nose and face.


Treatment for your cat depends on the cause. We will work with you to first, make your cat less itchy and then to help you determine what may be the underlying cause and how to reduce episodes. Unfortunately, allergies are forever, but we at Chateau Veterinary Hospital will help you with control and treatment.

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