Hearing your cat sneeze once or twice is usually cute. Hearing them sneeze all day? That's concerning. Cat sneezing is one of the most googled pet symptoms, and for good reason—it's common, and figuring out whether it's a minor irritation or something serious isn't always obvious.
Let's walk through the causes, red flags, and what you can actually do to help your sneezy cat.
Common Causes of Cat Sneezing
- Upper respiratory infection (URI) — This is by far the most common cause. Feline herpesvirus (FHV-1) and feline calicivirus (FCV) account for about 90% of cat URIs. Symptoms include sneezing, nasal discharge, eye discharge, and sometimes fever or reduced appetite. Think of it as a "cat cold."
- Environmental irritants — Dust, cigarette smoke, perfume, air fresheners, scented litter, cleaning products, and candles can all irritate your cat's sensitive nasal passages.
- Allergies — Less common in cats than dogs, but cats can be allergic to pollen, mold, or dust mites. Unlike dogs who itch, allergic cats may sneeze, have watery eyes, or develop skin problems.
- Dental disease — Severe dental infections, especially in the upper teeth, can cause drainage into the nasal cavity and trigger sneezing. This is more common in older cats.
- Nasal polyps or tumors — Growths in the nasal passages can cause chronic sneezing, often with discharge from one nostril only. More common in older cats.
- Foreign body — A blade of grass, a seed, or other small object stuck in the nasal passage causes sudden, violent sneezing—often from one nostril.
- Fungal infection — Cryptococcus is the most common fungal cause of nasal disease in cats, though it's relatively rare.
🚨 Red Flags: See Your Vet If You Notice:
- Yellow or green nasal discharge — Indicates bacterial infection that likely needs antibiotics.
- Blood in the discharge (epistaxis) — Can indicate more serious nasal disease, trauma, or clotting issues.
- Eye discharge, squinting, or swollen eyes — URI can affect the eyes and may need eye drops to prevent corneal damage.
- Not eating for more than 24 hours — Cats who can't smell their food often won't eat. This is dangerous—cats can develop hepatic lipidosis (fatty liver disease) after just 2-3 days without food.
- Difficulty breathing or open-mouth breathing — Cats are nose-breathers. If they're breathing through their mouth, they're in distress. This is urgent.
- Lethargy or hiding — A sick cat who withdraws is often sicker than they appear.
- Kittens under 6 months — Their immune systems are immature. URIs can progress to pneumonia quickly.
- Discharge from only one nostril — May indicate a foreign body, polyp, or tumor rather than a simple infection.
What You Can Do at Home
If your cat is sneezing but still eating, drinking, and acting mostly normal, here's how to help:
Home Care Tips:
- Steam therapy — Run a hot shower and sit with your cat in the steamy bathroom for 10-15 minutes (don't put them in the shower). The steam helps loosen nasal congestion.
- Gently clean discharge — Use a warm, damp cloth to wipe away nasal and eye discharge. Keep the face clean so your cat can smell and breathe.
- Warm up their food — Cats rely heavily on smell to eat. Warming wet food slightly makes it more aromatic and appealing to a congested cat.
- Eliminate irritants — Switch to unscented litter, stop using air fresheners near your cat, and don't smoke indoors.
- Keep them hydrated — Offer fresh water, consider a water fountain (cats prefer running water), or add water to their wet food.
- L-lysine supplement — Some vets recommend L-lysine for cats with recurrent herpesvirus flare-ups. Evidence is mixed, but it's generally safe. Ask your vet.
- Isolate from other cats — If you have multiple cats, keep the sneezing cat separate. URIs are highly contagious between cats.
Important: Never give your cat human cold medicine. Acetaminophen (Tylenol) is fatal to cats, and many decongestants are toxic. Only use medications prescribed by your vet.
Chronic Sneezing: When It Won't Stop
Some cats develop chronic sneezing that persists for weeks or months. This is often caused by chronic rhinitis—permanent damage to the nasal passages from a previous severe URI. These cats may always have some degree of sneezing and occasional discharge, especially during stress or immune suppression. Your vet can help manage this with supportive care and sometimes periodic antibiotics for flare-ups.
Can My Cat Give Me Their Cold?
No. Feline herpesvirus and calicivirus are species-specific and cannot infect humans. However, they are very contagious to other cats. If you handle a sick cat, wash your hands before touching your other cats.