What Is Stomatitis in Cats?

Quick Answer

Stomatitis is a severe, painful inflammation of the tissues inside a cat's mouth. Unlike simple gingivitis, the inflammation often extends well beyond the gums and can affect the cheeks, tongue, back of the mouth and throat. Cats with stomatitis may struggle to eat, drool excessively, develop bad breath and lose weight. While the exact cause remains unknown, treatment often involves pain relief, dental care and, in many cases, extraction of some or all of the teeth.

What Is Stomatitis?

Stomatitis is an immune-mediated inflammatory disease.

Instead of reacting normally to plaque and bacteria on the teeth, the cat's immune system mounts an exaggerated inflammatory response.

The result is intense inflammation that makes even gentle contact with food, water or the tongue extremely painful.

Unlike routine dental disease, stomatitis is not simply caused by dirty teeth.

What Causes Stomatitis?

The exact cause is still unknown.

Current research suggests several factors may contribute, including:

• An abnormal immune response to plaque bacteria

• Chronic viral infections such as calicivirus

• Dental disease

• Genetics

• Environmental factors

Most veterinarians believe several factors work together rather than there being a single cause.

What Are the Signs of Stomatitis?

Cats are experts at hiding pain.

Many continue eating despite significant discomfort until the disease becomes advanced.

Common signs include:

• Drooling

• Bad breath

• Difficulty eating

• Preferring soft food

• Crying while eating

• Dropping food

• Weight loss

• Pawing at the mouth

• Poor grooming

• Reduced activity

• Hiding more than usual

Some cats approach the food bowl eagerly but walk away after attempting to eat because chewing has become too painful.

How Is Stomatitis Different From Gingivitis?

This is one of the most common questions owners ask.

Gingivitis is inflammation limited mainly to the gums around the teeth.

Stomatitis involves much more extensive inflammation, often affecting the entire mouth.

Because the disease is more widespread, it is usually far more painful than simple gingivitis.

A Clinical Insight: Cats Often Hide Severe Pain

One of the surprising things we see in practice is that many cats with advanced stomatitis still try to eat every day.

Owners often tell us:

"He's still eating, so I didn't think his mouth could be that bad."

Unfortunately, cats are remarkably good at masking pain.

It's not unusual for a cat with severe inflammation to continue eating because survival instinct overrides discomfort.

Many owners notice dramatic improvements after treatment, including:

• Eating more enthusiastically

• Grooming normally again

• Becoming more playful

• Seeking more affection

• Regaining lost weight

These changes highlight just how much chronic oral pain can affect a cat's quality of life.

Can Stomatitis Be Diagnosed During a Routine Examination?

A veterinarian may suspect stomatitis during an awake examination if there is obvious redness and inflammation.

However, a full assessment often requires:

• General anaesthesia

• A complete oral examination

• Full-mouth dental X-rays

Dental radiographs help identify additional problems such as tooth resorption or hidden periodontal disease that may influence treatment decisions.

Why Are Dental X-Rays Important?

Many cats with stomatitis also have:

• Tooth resorption

• Periodontal disease

• Tooth root infections

• Retained roots

Dental X-rays allow veterinarians to assess every tooth below the gumline and develop the most appropriate treatment plan.

How Is Stomatitis Treated?

Treatment depends on the severity of the disease.

Options may include:

• Professional dental cleaning

• Pain relief

• Anti-inflammatory medications

• Antibiotics when indicated

• Management of concurrent infections

• Tooth extractions

For many cats with moderate to severe stomatitis, extracting the premolars and molars—or in some cases all teeth—provides the best chance of long-term pain relief.

Although the idea of removing teeth can sound alarming, most cats adapt exceptionally well and are much happier once the chronic source of inflammation has been removed.

Will My Cat Still Eat Without Teeth?

Yes.

This is one of the biggest concerns owners have.

Cats use their teeth primarily to grasp and tear food rather than to grind it thoroughly.

Many cats that have had extensive dental extractions continue to eat:

• Wet food

• Dry food

• Small treats

In fact, many eat better after surgery because the chronic pain has been relieved.

What Is the Long-Term Outlook?

The prognosis varies.

Many cats experience a significant improvement in comfort and quality of life after dental extractions.

Some cats require ongoing medication or regular monitoring if inflammation persists, but most enjoy a much better quality of life once the major sources of oral inflammation have been addressed.

Can Stomatitis Be Prevented?

Unfortunately, there is no guaranteed way to prevent stomatitis.

However:

• Regular dental examinations

• Early treatment of dental disease

• Routine veterinary care

may help identify oral problems before they become severe.

Frequently Asked Questions

Is stomatitis the same as gingivitis?

No. Gingivitis affects only the gums, whereas stomatitis causes widespread inflammation throughout the mouth.

Is stomatitis painful?

Yes. Stomatitis is considered one of the most painful oral diseases affecting cats.

Will my cat need all of its teeth removed?

Not always. The number of teeth removed depends on the severity and distribution of the disease. Some cats require only selected teeth to be extracted, while others benefit from full-mouth extractions.

Can stomatitis be cured?

There is no simple cure, but many cats achieve excellent long-term pain relief after appropriate treatment, particularly dental extractions.

Can my cat still eat dry food after tooth extractions?

Many cats can. Once their mouth has healed and the pain has resolved, numerous cats return to eating dry food despite having few or no teeth.

Key Takeaways

• Stomatitis is a severe inflammatory disease affecting the mouth in cats.

• It causes significant pain and often leads to difficulty eating, drooling and weight loss.

• Dental X-rays are essential to assess the full extent of disease and identify concurrent dental conditions.

• Tooth extractions are one of the most effective treatments for many affected cats.

• Most cats experience a substantial improvement in comfort and quality of life after appropriate treatment.

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Book Your Cat's Dental Assessment

If your cat has bad breath, yellow teeth or signs of dental disease, don't wait until the problem becomes painful.

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Early treatment is often simpler, more affordable and more comfortable for your cat.

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Contact Fortitude Valley Vet today to arrange a dental assessment and learn why so many Brisbane cat owners trust us for affordable, comprehensive dental care.

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Fortitude Valley Vet proudly cares for cats from:

• Fortitude Valley

• Newstead

• Teneriffe

• New Farm

• Bowen Hills

• Spring Hill

• Herston

• Kelvin Grove

• Paddington

• Red Hill

• Hamilton

• Windsor

• Albion

• Ashgrove

• Petrie Terrace

Many of our clients choose us because they want transparent pricing, modern dental equipment and compassionate veterinary care close to Brisbane's inner city.

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Reviewed by Dr Nic Cher, BVMS
Principal Veterinarian | Fortitude Valley Vet

Dr Nic Cher is a Brisbane veterinarian with over 15 years of experience caring for dogs and cats. He has a special interest in preventive healthcare, pet dentistry, pet longevity and helping owners make informed, evidence-based decisions to keep their pets healthier for longer.

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