Although most of the time a sneezing cat is nothing to worry about, there are occasions when a cat sneezing may be a sign of something more than just a cold.
If you notice your cat sneezing for a long period of time, coupled with other signs, such as swollen glands and eyes, you should take him to the vet for a check up.
Allergens and Other Factors - Cats can have allergies just like humans, and it's important to find the cause. Keep a close eye on your cat and his surroundings to find out what is causing him to sneeze. This can be difficult during certain times of the year.
He could have breathed in something irritating like:
Upper Respiratory Infection - The 2 most common reasons for a sneezing cat are upper respiratory infections, or having something stuck in nasal passages. Most infections that can cause sneezing are caused from a virus called Parainfluenza or Adenovirus.
Both of these viruses are very contagious and can be spread easily through contact with another cat. Some other symptoms you may notice are: excess mucus, swollen eyes and glands, coughing, excessive sneezing.
Dental Problems Can Cause Sneezing - This is often overlooked when it comes to cat care, and isn't usually thought of as a possible reason for your cat sneezing. Your cat could have an advanced tooth abscess with infections in the upper teeth. This can penetrate the nasal region, resulting in a sneezing cat.
It's very important to maintain good dental care for your cat. Check your cat's mouth often, and use a toothbrush specially made for cats to clean his teeth.
Sneezing up blood - This can be very serious, and may ultimately be a sign of nasal cancer. Chances are this isn't the case, but it's better to be safe and take your cat to the vet if you notice this as a symptom. Your vet will give him a sinus flush and x-rays.
Complications from Feline Herpes - Feline herpes is just like its human counterpart, with the cat having flare ups and breakouts. There is no cure for this virus, though there are long periods of remission.
When the herpes virus flares up, the cat can have sinus problems and nasal polyps that can end up becoming infected.
Sneezing from Feline Leukemia - Frequent sneezing in a cat can be a sign of feline leukemia. Read more about the feline leukemia virus to find out all the symptoms and treatment options.
Remember that a cat sneezing is probably nothing to worry about in most cases, but it could be a sign of something more serious. It's best to try to find the source of the sneezing, and if in doubt take your cat to the veterinarian.