Is it Normal that My Cat Keeps Sneezing?

A sneeze here and there from your cat is generally nothing to worry about. But when the sneezing becomes frequent, persistent, or is accompanied by other symptoms, it is natural to start wondering whether something is wrong. Cat sneezing is one of the most common reasons pet owners reach out to their veterinarian, and it can be caused by everything from a bit of dust in the air to a serious upper respiratory infection. Occasional cat sneezing is normal, but a cat that keeps sneezing, especially alongside other symptoms, deserves a closer look. This blog covers the most common causes of frequent cat sneezing, warning signs to watch for, and when it is time to make that call to your vet.

Why Do Cats Sneeze? Understanding the Basics

Sneezing is a reflex action. When something irritates the nasal passages, the body responds by expelling air forcefully through the nose to clear the irritant. In cats, this can happen for many reasons, ranging from completely benign to medically significant. A single sneeze or even a brief sneezing spell after sniffing something new is normal cat behavior. It is the persistent or abnormal sneezing that warrants attention.

What Causes Cat Sneezing?

Understanding what might be behind your cat’s sneezing helps you communicate more clearly with your veterinarian and recognize when the situation may be urgent. The causes of cat sneezing range widely in severity, so knowing what else to look for alongside the sneezing is important.

Upper Respiratory Infections

Upper respiratory infections (URIs) are the most common cause of persistent sneezing in cats. Often referred to as cat colds, these infections are usually caused by viruses, most commonly feline herpesvirus type 1 (FHV-1) and feline calicivirus (FCV). These two pathogens are responsible for the vast majority of feline upper respiratory infections and are highly contagious between cats. Bacterial infections, such as Chlamydophila felis or Bordetella bronchiseptica, can also be involved, either alone or as secondary infections following viral illness.

Signs of an upper respiratory infection in cats, in addition to frequent sneezing, include:

• Nasal discharge that may be clear, yellow, or green
• Watery or goopy eye discharge
• Congestion or noisy breathing
• Lethargy or decreased activity
• Reduced appetite or difficulty smelling food
• Mild fever
• Mouth ulcers or drooling (associated with calicivirus)

Kittens, senior cats, and cats with weakened immune systems are particularly vulnerable to URIs and may develop more serious complications. If your cat is sneezing frequently alongside any of these signs, a veterinary visit is the right next step.

Feline Herpesvirus and Chronic Sneezing

One important thing to know about feline herpesvirus is that once a cat is infected, the virus remains in the body for life. Most cats carry FHV-1 without showing symptoms, but stress, illness, or changes in the environment can cause a flare-up. Cats with chronic herpesvirus infection may experience recurrent bouts of sneezing, eye discharge, and nasal congestion throughout their lives. While there is no cure, management options are available, and your veterinarian can help you develop a plan to minimize flare-ups and keep your cat comfortable.

Environmental Irritants and Allergies

Just like people, cats can sneeze in response to airborne irritants and allergens. Common environmental triggers for cat sneezing include perfume, air fresheners, scented candles, cigarette smoke, cleaning products, dusty cat litter, and pollen. Cats with allergies may sneeze seasonally or consistently depending on what they are reacting to. Unlike dogs, cats less commonly show skin symptoms from allergies and more often present with respiratory signs. If your cat sneezes primarily around specific products or at certain times of year, an environmental trigger may be the cause.

Nasal Polyps or Growths

Benign nasal polyps or, less commonly, nasal tumors can cause persistent sneezing in cats. These growths obstruct the nasal passages and trigger chronic irritation. Nasal polyps are more common in younger cats, while nasal tumors, though rare, are more commonly seen in older cats. Signs that a structural issue may be involved include one-sided nasal discharge, sneezing that produces blood, facial swelling, or noisy breathing. These symptoms call for a thorough veterinary evaluation, which may include imaging.

Dental Disease

This might surprise you, but dental disease is a legitimate cause of sneezing in cats. The roots of a cat’s upper teeth sit very close to the nasal passages. When a tooth root becomes infected or abscessed, the infection can spread into the nasal cavity and cause sneezing, nasal discharge, and congestion. Cats with dental disease often do not show obvious signs of oral pain, which is why routine dental checkups are so valuable. If your cat is sneezing along with bad breath, facial swelling, or reluctance to eat, a dental examination is worth pursuing.

Foreign Bodies in the Nasal Passage

Cats that spend time outdoors may occasionally inhale a blade of grass, a seed, or another foreign material into the nasal passage. This typically causes sudden, intense, and repetitive sneezing, often affecting one nostril. The cat may paw at its face and appear distressed. If your cat suddenly starts sneezing violently and cannot seem to stop, a foreign object in the nose should be considered. This situation requires veterinary attention to safely remove the object and prevent secondary infection.

When Is Cat Sneezing a Sign of Something Serious?

While many cases of cat sneezing are not emergencies, certain signs suggest that veterinary care is needed promptly. Watch for these red flags:

• Sneezing that is frequent, persistent, or worsening over time
• Bloody nasal discharge or nosebleeds
• Sneezing from only one nostril, which can indicate a localized problem
• Significant nasal discharge that is yellow or green, suggesting infection
• Eye discharge, especially if one or both eyes are swollen or closed
• Lethargy, significant decrease in appetite, or weight loss
• Facial swelling or deformity around the nose or cheeks
• Difficulty breathing or open-mouth breathing in a cat

How Do Vets Diagnose the Cause of Cat Sneezing?

If your cat keeps sneezing and you take them to the vet, your veterinarian will begin with a thorough physical examination and a detailed history of the symptoms. Depending on what they find, they may recommend additional diagnostics such as nasal swabs or cultures for infectious agents, bloodwork to assess overall health, X-rays or advanced imaging to evaluate the nasal passages and sinuses, or dental radiographs if dental disease is suspected. In some cases, sedation and rhinoscopy (a procedure to directly visualize the nasal passages) may be needed to find the cause.

What About Sneezing in Kittens?

Kitten sneezing is very common, largely because kittens are highly susceptible to upper respiratory infections. Kittens born to infected mothers or raised in group housing situations like shelters are especially prone to early exposure to feline herpesvirus and calicivirus. A sneezing kitten should be evaluated by a veterinarian, as URIs in kittens can escalate quickly and lead to complications including pneumonia or eye damage. Early treatment can make a significant difference in the kitten’s recovery and long-term health.

Sneezing Is Often Manageable With the Right Veterinary Support

Cat sneezing is a symptom, not a diagnosis, and the range of possible causes is wide. Whether your cat has a mild upper respiratory infection, seasonal allergies, or a chronic condition like feline herpesvirus, the right veterinary care can make a real difference in your cat’s quality of life. At Ashby Animal Clinic in Harrisonburg, VA, our team is experienced in evaluating and managing feline respiratory issues. If your cat keeps sneezing or you have noticed other changes alongside the sneezing, call (540) 433-9174 or use the online form to book an appointment today. Your cat deserves to breathe easy.