Feline Stomatitis: Symptoms, Causes & Treatment
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Feline stomatitis (feline chronic gingivostomatitis) is a severe, painful inflammation of the gums and the tissues at the back of the mouth. It's thought to be an overreaction of the cat's immune system to plaque and bacteria on the teeth. Cats are often in real pain — drooling, dropping food, and reluctant to eat. It can be difficult to control, but many cats are effectively cured by extracting the affected teeth.
What stomatitis is and why it hurts
Feline chronic gingivostomatitis (FCGS) is far more than ordinary gum disease. The immune system mounts an exaggerated inflammatory response to the plaque and bacteria that coat the teeth, and the result is bright-red, ulcerated, bleeding tissue — often extending to the arches at the very back of the mouth where the upper and lower jaws meet. That area, called the caudal mouth, is a hallmark of the disease.
The inflammation is genuinely painful. Imagine severe mouth ulcers that never heal — that's the daily experience for an affected cat, which is why so many of the signs revolve around eating and mouth discomfort.
Signs to watch for
Because cats hide pain well, the clues are often subtle at first and then hard to miss:
- Drooling, sometimes blood-tinged, and pawing at the mouth
- Bad breath (halitosis) and difficulty or pain when eating
- Dropping food, chewing on one side, or crying out at the food bowl
- Preferring soft food or approaching the bowl hungry but backing away
- Weight loss and a decline in grooming, leading to a dull, unkempt coat
- Irritability or hiding because of ongoing pain
Many owners first notice that a normally tidy cat looks scruffy — grooming hurts when the mouth is inflamed.
What causes it
The exact trigger isn't fully understood, but the leading view is an abnormal immune reaction to plaque. Several factors are commonly associated with it:
- Dental plaque and bacteria — the immune system overreacts to them.
- Viral infections such as feline calicivirus, and sometimes FIV or FeLV, which can worsen or complicate the disease.
- Underlying dental disease like tooth resorption or periodontal disease.
Your vet will often recommend testing for FIV and FeLV, because those infections affect the overall picture and management.
How it's diagnosed and treated
Diagnosis is based on a thorough oral exam under anesthesia, dental X-rays, and sometimes a biopsy to rule out other causes such as oral cancer. Treatment usually combines two approaches:
| Approach | What it involves |
|---|---|
| Extraction | Removing the teeth in the affected areas — often most or all teeth. This is the single most effective treatment, curing or greatly improving a majority of cats. |
| Home dental care | Meticulous plaque control on any remaining teeth to reduce the trigger. |
| Medication | Pain relief, anti-inflammatories, and sometimes immune-modulating drugs for cats that don't fully respond to extraction. |
Practical take: Extraction sounds drastic, but cats manage remarkably well without teeth — and most are far more comfortable and eat better once the painful teeth are gone.
Living with a stomatitis cat
Even after treatment, some cats need ongoing management, so watching for signs of a flare-up matters. A cat that starts drooling again, slows down at meals, or loses weight may need a recheck. Keeping a simple record of weight, appetite and mouth comfort over time turns vague impressions into a clear pattern your vet can act on — and helps you catch a relapse before your cat is in serious pain.
Catch a painful mouth flare-up early
Tavi tracks your cat's weight, appetite and symptom notes over time and charts them, so a dip in eating or a return of drooling stands out before it becomes a crisis. Free for your first pet.
Frequently asked questions
Is feline stomatitis curable?
It can't always be cured with medication alone, but full or partial tooth extraction cures or dramatically improves the majority of cats. Some cats need ongoing medical management afterward, but most become far more comfortable once the affected teeth are removed.
Is stomatitis painful for cats?
Yes, it's one of the most painful common dental conditions in cats. The ulcerated, inflamed tissue makes eating, grooming and even opening the mouth hurt, which is why affected cats often drool, drop food and lose weight.
Why does tooth extraction help stomatitis?
Because the disease is driven by the immune system's overreaction to plaque on the teeth, removing the teeth removes the surface where plaque forms and the main trigger for inflammation. Most cats improve significantly, and many recover fully.
Can a cat eat without teeth?
Yes. Cats adapt very well to having few or no teeth and can eat both wet and even dry food comfortably. For most cats, eating without painful teeth is a huge improvement over living with severe stomatitis.
Is stomatitis linked to feline viruses?
It can be. Feline calicivirus is commonly associated with stomatitis, and FIV or FeLV can complicate or worsen it. Your vet may test for these viruses because they affect the overall management plan.
Tavi's guides are informational and not a substitute for professional veterinary advice, diagnosis or treatment. When in doubt, call your veterinarian. Sources: Cornell University Feline Health Center; American Veterinary Dental College; VCA Animal Hospitals; Merck Veterinary Manual