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    Why Cats Sneeze

    An occasional sneeze in a cat is normal and no real cause for alarm. Just as in humans, sneezing in cats is an explosive release of air through the nose and mouth - often the body’s response to irritants in the nasal passages. Sometimes, excitement or movement can bring on sneezing in cats.

    However, if your cat’s sneezing won’t go away, or if other symptoms have cropped up along with sneezing, you may need to check with your veterinarian to see if treatment is needed.

    Causes of Sneezing

    If your cat is sneezing a lot, your veterinarian may initially suspect a cause based on a review of your cat’s symptoms. One of the main causes of sneezing is infection. In some cases, the vet may take a swab from the mouth, throat, eyes, or nose and send it to a lab to confirm an infection. Inhaled irritants or allergens are other common causes of sneezing in cats.

    Viral, bacterial, or fungal infections. If you’ve got a sneezing cat, chances are good the cat has an upper respiratory infection. Similar to colds in humans, these infections are more common in young cats, especially in those coming from animal shelters. Many of these infections can be prevented with early and complete vaccinations.

    Viral infections that most commonly cause sneezing in cats are:

    • Feline herpes virus. Cats catch herpes from exposure to other cats who are infected. Stress can cause a flare-up as well as transmission to other cats. Treatment is aimed at controlling the symptoms. Feline herpes virus is NOT contagious to humans.
    • Feline calicivirus. This virus is highly contagious between cats. Mouth ulcers are the most common problem, but it can affect the respiratory tract and even cause pneumonia.

    These infections may make your cat more likely to develop other respiratory problems that can exacerbate sneezing. For example, a cat with herpes may also develop a secondary bacterial infection. These are often treatable with antibiotics.

    A wide range of other infections may also lead to sneezing. They include:

    • Feline infectious peritonitis, which may cause no symptoms, mild symptoms, or more severe symptoms over time
    • Feline Immunodeficiency Virus (FIV), which develops slowly, but severely impacts a cat’s immune system, leaving the cat vulnerable to other infections
    • Feline leukemia, a serious and often fatal infection
    • Chlamydia, which often produces an eye infection (conjunctivitis)
    • Bordetella
    • Mycoplasma

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