Stomatitis in Cats: Signs, Treatment, Tooth Extractions and Prognosis

Stomatitis in Cats: Signs, Treatment, Tooth Extractions and Prognosis

By Dr Duncan Houston

A cat with stomatitis may walk eagerly towards food, sniff it, then suddenly pull away. They may drool, swallow biscuits whole, stop grooming or become unusually quiet. Some continue eating despite severe inflammation, which can make the condition look far less painful than it really is.

Feline chronic gingivostomatitis, commonly shortened to FCGS, is more than ordinary gingivitis. The inflammation extends beyond the gums into the cheeks, tissues surrounding the teeth and often the back of the mouth. It can be ulcerated, proliferative, prone to bleeding and intensely painful.

This is not simply an infection or a cat being “allergic to their own teeth”. It is a complex immune-mediated inflammatory disease involving dental disease, the oral microbiome and, in some cats, persistent viral stimulation. Comprehensive dental treatment remains the foundation of care.

Quick Answer

Stomatitis in cats is a severe, chronic inflammation of the mouth that commonly causes oral pain, drooling, difficulty eating, poor grooming and weight loss. Diagnosis usually requires an examination under general anaesthesia, full-mouth intraoral dental X-rays and, in selected cases, a biopsy and viral testing.

Extraction of all premolar and molar teeth, or all teeth when inflammation extends further forward, provides the best chance of long-term improvement. Medication is important for pain relief and for cats with persistent inflammation, but repeated antibiotics or steroids are not a reliable replacement for proper dental treatment.

Seek same-day veterinary care if your cat has stopped eating, cannot swallow comfortably, has continuous bloody drool or appears severely painful. Breathing difficulty, collapse, uncontrolled bleeding or rapidly progressing facial or throat swelling requires emergency care.

What Is Feline Chronic Gingivostomatitis?

Feline chronic gingivostomatitis is an inflammatory disease affecting the oral mucosa.

The hallmark is inflammation that extends beyond the gingiva, which is the narrow band of gum tissue immediately surrounding each tooth. Commonly affected areas include:

• The gingiva around the teeth

• The alveolar mucosa beside the teeth

• The inner cheeks

• The tissues beneath the tongue

• The back of the mouth

• The tissues lateral to the palatoglossal folds

The lesions may be predominantly ulcerative, with raw erosions and bleeding, or proliferative, with thickened and irregular inflammatory tissue. Some cats develop both patterns.

Is stomatitis the same as gingivitis?

No.

Condition	What is inflamed	What it usually means
Gingivitis	The gum margin immediately surrounding the teeth	Often associated with plaque and early periodontal disease
Periodontitis	The deeper structures supporting the teeth	Causes attachment loss, bone loss and potentially loose teeth
Stomatitis	Oral tissues beyond the gum margin, including the cheeks and back of the mouth	A more widespread and often immune-mediated inflammatory disease
Tooth resorption	The hard structure of individual teeth	A separate, painful dental disease that commonly occurs alongside stomatitis

A cat can have gingivitis, periodontitis, tooth resorption and stomatitis at the same time. Treating only the most visible red gum tissue can therefore leave substantial disease beneath the gumline.

What does “plasma cell stomatitis” mean?

Plasma cells and lymphocytes are commonly found within affected oral tissue when it is examined under a microscope. This is why older descriptions sometimes use terms such as plasma cell stomatitis or lymphoplasmacytic gingivostomatitis.

These terms describe the inflammatory cell pattern. They do not necessarily represent a separate disease with a different treatment plan.

How Painful Is Stomatitis?

FCGS is usually moderately to severely painful.

Eating, grooming, swallowing and moving the tongue can repeatedly rub against ulcerated tissue. The back teeth may also press food against inflamed areas each time the cat chews.

Cats often conceal this pain extremely well. Some will continue eating because hunger eventually overcomes their reluctance, but they may:

• Swallow food without chewing

• Chew on one side

• Eat only the centre of a meal

• Walk away and return repeatedly

• Prefer smooth or soft food

• Wait until the house is quiet before eating

• Stop grooming around the chest, back and hindquarters

Still eating does not mean the mouth is comfortable.

In practice, owners often recognise the severity of the previous pain only after treatment, when the cat begins grooming, socialising, playing and eating more confidently again. FCGS is strongly associated with oral pain, reduced appetite, poor grooming and reduced social interaction.

Signs of Stomatitis in Cats

Possible signs include:

• Strong or unpleasant breath

• Red, swollen or ulcerated oral tissue

• Thickened tissue at the back of the mouth

• Drooling

• Blood-tinged saliva

• Saliva staining around the lips, chin or front legs

• Pawing or rubbing at the mouth

• Crying or pulling away while eating

• Dropping food

• Difficulty chewing

• Difficulty swallowing

• Preferring wet or soft food

• Approaching food but appearing unable to eat it

• Reduced appetite

• Weight loss

• Poor grooming

• A greasy, matted or unkempt coat

• Hiding

• Irritability

• Reduced play or social interaction

• Resisting touch around the face

• Enlarged lymph nodes beneath the jaw

Some cats show only subtle behavioural changes. A previously sociable cat may become quiet, sleep more or stop sitting with the family before anyone notices obvious oral signs.

What Does Feline Stomatitis Look Like?

The inflammation is often most severe towards the back of the mouth.

You may see:

• Bright red tissue beside the back teeth

• Raw areas behind the final molars

• Ulcers on the inner cheeks

• Thick, cobblestone-like inflammatory tissue

• Tissue that bleeds easily

• Redness beneath or beside the tongue

• Widespread gingivitis around several teeth

• Missing, broken or resorbing teeth

• Pus, discharge or an unpleasant smell when secondary infection is present

Do not force your cat’s mouth open to look for these changes. A painful cat may panic, bite or injure the jaw while struggling.

A quick glimpse at the front gums also cannot rule the disease out. The most severe tissue may be hidden at the back of the mouth.

How Worried Should You Be?

Severity	What it may look like	What to do
Prompt assessment needed	Red oral tissue, bad breath or mild eating changes, but your cat remains bright and continues eating	Arrange a veterinary examination within the next few days
Moderate concern	Drooling, chewing on one side, reduced grooming, weight loss or repeatedly walking away from food	Book an examination within 24 to 72 hours
Severe	Bloody saliva, marked oral pain, very little food intake, dehydration, lethargy or extensive ulceration	Seek same-day veterinary care
Critical	Breathing difficulty, inability to swallow, uncontrolled bleeding, collapse or rapidly increasing facial or throat swelling	Go to an emergency veterinary clinic immediately

FCGS itself usually develops over time rather than causing sudden collapse. The immediate danger comes from uncontrolled pain, inability to eat or drink, severe dehydration, significant bleeding or another condition being mistaken for stomatitis.

What Causes Stomatitis in Cats?

The exact cause remains incompletely understood.

The best current explanation is that susceptible cats develop an abnormal and persistent immune response to chronic stimulation within the mouth. Several factors may contribute, and different cats may have different combinations of triggers.

Immune dysregulation

Affected tissue contains large numbers of activated immune cells, including lymphocytes and plasma cells. Both local and systemic immune abnormalities have been documented.

The immune response is real, but describing it as the cat being “allergic to their teeth” is too simplistic. The teeth are not allergens. They provide surfaces where plaque, bacteria and chronic periodontal inflammation can continue stimulating the immune system.

Periodontal disease and tooth resorption

Many cats with FCGS also have:

• Moderate to severe periodontitis

• Tooth resorption

• Retained tooth roots

• Alveolar bone loss

• Chronic subgingival inflammation

Removing teeth can substantially reduce this inflammatory burden. It also removes plaque-retentive surfaces and treats concurrent painful dental disease.

Feline calicivirus

Feline calicivirus is strongly associated with FCGS and may alter the severity or persistence of the immune response.

However:

• Not every cat with FCGS tests positive for calicivirus.

• Many healthy cats can carry or shed calicivirus.

• A positive test does not prove that calicivirus is the sole cause.

• Calicivirus load does not consistently predict lesion severity or treatment outcome.

The evidence supports calicivirus as an important disease-modifying factor rather than a complete explanation for every case.

FIV and FeLV

Feline immunodeficiency virus and feline leukaemia virus are not responsible for every case, but they can affect immune function, treatment planning and prognosis.

Testing is commonly recommended because retroviral status may influence how a cat responds to extraction and immunomodulating medication. FeLV-positive cats have shown a higher risk of failing to improve after dental extraction in published research.

The oral microbiome

Cats with FCGS have measurable changes in the organisms living beneath the gums and throughout the oral cavity.

It remains unclear whether this dysbiosis starts the disease, develops because the mouth is inflamed or does both. It probably forms one part of a broader interaction between dental disease, viruses, immune regulation and the oral environment.

Multi-cat households

FCGS has been associated with shared households, and the reported risk increases with the number of cohabiting cats.

This does not mean another cat directly “gave” your cat stomatitis, and it is not a reason to rehome healthy animals. Shared viral exposure, population density, microbiome exchange and other environmental factors may contribute, but the relationship is not yet fully understood.

Is stomatitis caused by poor dental care?

Poor dental health can increase the inflammatory burden, but FCGS is not simply the result of an owner failing to brush their cat’s teeth.

Some cats develop severe disease despite attentive care. Others have substantial plaque without developing stomatitis.

This is an immune-mediated condition with multiple associated factors, not a moral judgement on how often somebody cleaned a food bowl or wielded a toothbrush.

Is Feline Stomatitis Contagious?

FCGS itself is not considered directly contagious. A cat cannot transmit the immune-mediated condition simply by grooming another cat or sharing a bed.

However, associated infections can spread:

• Feline calicivirus can be transmitted between cats.

• FeLV and FIV have their own transmission routes.

• Some acute viral oral diseases can initially resemble chronic stomatitis.

If several cats in the home develop oral ulcers, respiratory signs, fever or loss of appetite, contact a veterinarian. Do not assume they have all independently developed the same chronic immune-mediated condition.

What Else Can Look Like Stomatitis?

A red, ulcerated or proliferative mouth does not automatically mean FCGS.

Important alternatives include:

Possible condition	Clues that may increase suspicion
Severe gingivitis or periodontitis	Inflammation remains closely associated with the teeth and gum margins
Tooth resorption	Localised red tissue over one tooth, jaw chattering or pain when chewing
Oral squamous cell carcinoma	One-sided, firm, destructive or progressively enlarging tissue, particularly in an older cat
Eosinophilic granuloma complex	Lip ulcers, plaques or focal oral lesions associated with allergic skin disease
Kidney disease with uraemic ulceration	Severe systemic illness, vomiting, dehydration, abnormal breath and kidney-value changes
Foreign material or penetrating injury	Sudden signs, focal swelling, gagging or material trapped beneath the tongue
Chemical or electrical injury	Sudden oral burns, ulcers, tissue discolouration or known exposure
Acute viral ulceration	Fever, respiratory signs, tongue ulcers and a shorter history
Immune-mediated or infiltrative disease	Unusual distribution, progressive lesions or poor response to expected treatment

Oral squamous cell carcinoma and FCGS can rarely occur together. A 2025 case series found that this combination was uncommon, but all affected cats had long-standing proliferative disease. A changing, one-sided or treatment-resistant lesion should therefore be biopsied rather than indefinitely labelled as “just stomatitis”.

How Do Vets Diagnose Stomatitis?

There is no single blood test that confirms FCGS.

Diagnosis combines:

• The cat’s history

• The distribution and appearance of the oral inflammation

• A complete dental examination

• Intraoral dental radiographs

• Histopathology where appropriate

• Tests for associated disease

1. The Awake Examination

The initial examination may reveal:

• Drooling or saliva staining

• Facial discomfort

• Bad breath

• Weight loss

• Enlarged mandibular lymph nodes

• Gingivitis

• Visible caudal oral inflammation

• Missing, broken or abnormal teeth

Only limited assessment may be possible in an awake cat. Forcing a painful mouth open can create distress and still provide a poor view of the areas that matter most.

Sedation may occasionally help with initial assessment, but definitive dental examination and treatment require general anaesthesia.

2. Examination Under General Anaesthesia

Under anaesthesia, the veterinary team can:

• Examine every oral surface

• Assess the back of the mouth properly

• Probe around each tooth

• Identify periodontal pockets

• Chart missing and abnormal teeth

• Assess tooth mobility

• Obtain diagnostic dental radiographs

• Collect biopsy samples

• Perform extractions safely

• Protect the airway from blood and dental debris

Anaesthesia is an essential part of comprehensive feline dental diagnosis and treatment. Anaesthesia-free scaling cannot inspect beneath the gums, obtain intraoral radiographs or treat FCGS adequately.

3. Full-Mouth Intraoral Dental X-Rays

Full-mouth dental radiographs are essential in cats with suspected stomatitis.

They can reveal:

• Hidden tooth resorption

• Periodontal bone loss

• Retained roots

• Fractured teeth

• Endodontic disease

• Previously missed teeth beneath the gum

• Changes that influence whether a tooth should be removed

Radiographs should be taken before treatment to plan the procedure and after extraction to confirm that the intended roots have been removed.

A mouth that looks empty is not necessarily free of roots. Retained root fragments can continue causing pain, inflammation and treatment failure.

4. Biopsy and Histopathology

An incisional biopsy may be recommended to confirm the inflammatory pattern and exclude cancer or another oral disease.

Biopsy becomes particularly important when:

• A lesion is one-sided

• The tissue is firm or mass-like

• The appearance is unusual

• There is extensive proliferation

• Bone destruction is suspected

• The cat is older

• The lesion continues progressing

• Treatment has failed

• The diagnosis remains uncertain

Biopsy shows what type of cells are present. It does not necessarily identify the original trigger, and a report describing lymphoplasmacytic inflammation does not tell you whether calicivirus, dental disease or another factor initiated the response.

5. Blood and Viral Testing

Testing may include:

• Complete blood count

• Serum biochemistry

• FeLV testing

• FIV testing

• Urinalysis

• Additional infectious disease testing

• Calicivirus testing in selected cases

Bloodwork helps assess anaesthetic risk, hydration, organ function, inflammation and concurrent disease.

Calicivirus testing requires careful interpretation. A positive result supports exposure or shedding but does not independently confirm the cause of the oral lesions.

How Is Stomatitis Treated?

Treatment has three main goals:

1. Control pain and maintain nutrition.

2. Reduce the chronic inflammatory burden through comprehensive dental treatment.

3. Manage persistent immune-mediated inflammation when surgery alone is insufficient.

Pain Relief and Stabilisation

Pain management is essential before, during and after dental treatment.

Depending on the cat, the plan may include:

• Opioid analgesia

• Local dental nerve blocks

• Anti-inflammatory medication when medically appropriate

• Adjunctive pain medication

• Intravenous fluids

• Anti-nausea treatment

• Appetite support

• Nutritional support

A cat that is dehydrated, underweight or medically unstable may need initial hospital treatment before undergoing a lengthy dental procedure.

Current reviews emphasise that analgesia is fundamental at every stage of FCGS management.

Why Tooth Extraction Is the Main Treatment

The aim of extraction is not simply to remove visibly rotten teeth.

Extraction:

• Treats concurrent periodontal disease

• Removes painful resorptive teeth

• Removes retained or diseased roots

• Reduces plaque-retentive surfaces

• Decreases chronic antigenic stimulation

• Allows inflamed oral tissue a better opportunity to heal

Medical treatment alone may temporarily reduce discomfort, but it has not replaced extraction as the principal long-term treatment.

Do All Teeth Need to Be Removed?

Not necessarily, but the extraction plan must be comprehensive and based on the distribution of inflammation, dental radiographs and the condition of the remaining teeth.

Premolar and molar extractions

Removal of all premolars and molars may be considered when inflammation is confined to the caudal oral cavity and tissues associated with the cheek teeth.

This is sometimes called:

• Caudal-mouth extraction

• Partial-mouth extraction

• Premolar and molar extraction

The canine and incisor teeth may remain only when they are radiographically healthy and the nearby oral tissues are not inflamed.

Full-mouth extraction

Extraction of the canine and incisor teeth as well as all cheek teeth is more likely to be recommended when:

• Inflammation extends into the front of the mouth

• The tissues around the canine or incisor teeth are affected

• Remaining teeth have periodontal disease

• Tooth resorption is present

• Previous partial extraction has failed

• Plaque accumulating on the remaining teeth appears to maintain inflammation

Current clinical guidance supports full-mouth extraction when inflammation extends into the rostral oral cavity, while premolar and molar extraction may be suitable when disease is limited to the caudal tooth-bearing regions.

Extraction quality matters

The procedure should include:

• Full-mouth preoperative radiographs

• Careful surgical extraction

• Removal of diseased and retained roots

• Smoothing of sharp bone

• Tension-free gum closure

• Postoperative radiographs

• Multimodal pain relief

Leaving an avoidable root fragment behind can undermine an otherwise appropriate treatment plan.

How Successful Are Tooth Extractions?

Extraction provides meaningful improvement for most cats, but it is not a guaranteed cure.

In a 95-cat study:

• 28.4% achieved complete resolution.

• 39% achieved substantial clinical improvement.

• Approximately one-third had little or no improvement.

There was no statistically significant difference in overall outcome between partial-mouth and full-mouth extraction in that study, although the procedure selected for an individual cat should still reflect the location of inflammation and condition of the remaining teeth.

Many cats that ultimately improved still required medication for a limited period after the immediate postoperative phase. Improvement should therefore not be judged solely by how the mouth looks during the first few days after surgery.

The realistic outcome categories are:

Complete clinical remission

The oral lesions resolve, the cat is comfortable and ongoing medication is not required.

Substantial improvement

The lesions and pain improve greatly, but occasional or temporary medication may still be needed.

Partial response

The cat improves but continues to have meaningful inflammation requiring ongoing treatment.

Refractory disease

Significant painful inflammation continues despite appropriate extraction, healing and medical support.

Setting this expectation before surgery avoids two equally harmful mistakes: promising a guaranteed cure or avoiding the treatment because it cannot guarantee one.

Can Cats Eat Without Teeth?

Yes.

Cats do not need a full set of teeth to eat prepared food. Once the surgical sites have healed, many toothless cats eat wet food and may even return to eating dry food.

The first days after surgery usually require soft or moistened food according to the surgeon’s instructions. Longer term, a comfortable toothless mouth is far more useful than a mouth full of painful teeth.

University veterinary guidance notes that most cats experience an improved quality of life following appropriate extraction and adapt well without their teeth.

Are Antibiotics Needed?

Antibiotics may be appropriate when there is:

• Confirmed secondary bacterial infection

• Pus or purulent discharge

• Significant tissue infection

• A specific perioperative indication

• Concurrent disease that changes infection risk

They do not correct the underlying immune dysregulation and do not remove diseased teeth.

Published evidence for antibiotics in FCGS is limited, and improvement is often temporary. Current clinical reviews recommend reserving antibiotics for acute situations or documented secondary infection rather than using them as indefinite treatment for oral redness.

Repeated antibiotics can briefly improve odour or discharge while allowing the main disease to continue quietly underneath.

What About Corticosteroids?

Corticosteroids can rapidly reduce inflammation and may temporarily improve comfort.

They may be useful:

• While stabilising a severely affected cat

• During selected postoperative periods

• In refractory disease

• When other treatment is temporarily impossible

• As part of a carefully monitored palliative plan

They are not a dependable cure.

Repeated or prolonged corticosteroid use can cause significant adverse effects, including:

• Diabetes mellitus

• Increased infection risk

• Muscle loss

• Skin fragility

• Weight gain

• Delayed healing

• Suppression of diagnostic inflammation

Starting steroids before biopsy can also alter the appearance of a lesion. When the cat is stable, it is often better to obtain diagnostic samples first.

Ciclosporin

Ciclosporin, also called cyclosporine, suppresses specific aspects of lymphocyte activation and may help selected cats with persistent inflammation after extraction.

In a small randomised controlled trial involving previously extracted cats, seven of nine treated cats improved during the initial six-week period compared with one of seven cats receiving placebo. Longer follow-up found that five of 11 treated cats achieved clinical cure after at least three months of treatment.

Ciclosporin requires veterinary supervision because it can cause:

• Vomiting or diarrhoea

• Reduced appetite

• Immunosuppression

• Increased susceptibility to some infections

• Drug interactions

Cats receiving immunosuppressive treatment should not be fed raw meat and may require screening and monitoring tailored to their lifestyle and health.

Feline Interferon Omega

Recombinant feline interferon omega may help selected cats, particularly when calicivirus or retroviral infection is involved.

Evidence is mixed, administration protocols vary and availability differs between countries. It is generally considered an adjunct for selected cases rather than a replacement for comprehensive extraction.

Stem Cell Therapy

Mesenchymal stromal cell therapy is an emerging option for refractory FCGS after dental extraction.

A 2025 multicentre field study treated 46 cats with persistent disease using two intravenous doses of feline uterine-derived mesenchymal stem cells. More than half showed clinically meaningful improvement within two weeks. By three months, approximately three-quarters had improved owner-reported quality-of-life scores and nearly half had visible improvement in oral tissue. Adverse effects were generally mild and temporary.

These findings are encouraging, but stem cell therapy:

• Is not first-line treatment

• Does not replace extraction

• Is not yet available in every country

• May be costly

• Requires specialist oversight

• Does not guarantee remission

It is most relevant for cats with well-documented refractory disease after appropriate dental surgery.

What About Laser Treatment, Cryotherapy or Supplements?

Laser ablation, cryotherapy and numerous immune-modifying or nutritional treatments have been reported.

The evidence for most remains limited, inconsistent or based on small studies and case reports. They may occasionally be used as adjuncts by specialists, but they should not distract from:

• Pain control

• Full-mouth radiography

• Complete dental treatment

• Proper extraction technique

• Histopathology where indicated

• Management of refractory immune inflammation

No supplement has been proven to reliably cure FCGS.

What If Stomatitis Continues After Extractions?

Persistent inflammation does not automatically mean there are no remaining options.

The next steps should include checking:

Were all intended teeth and roots removed?

Postoperative radiographs should be reviewed. Retained roots, missed teeth or residual periodontal disease can maintain inflammation.

Was the original diagnosis correct?

Proliferative, one-sided or changing tissue may require repeat biopsy to rule out oral cancer or another disease.

Has enough healing time passed?

The mouth may remain inflamed during early healing. Response should be assessed through planned rechecks rather than one photograph taken shortly after surgery.

Is pain adequately controlled?

A painful cat may continue eating poorly even when the inflammatory tissue is gradually improving.

Is secondary infection present?

Cytology or culture may be appropriate when there is pus, odour, discharge or unexpected deterioration.

Is the cat FeLV, FIV or calicivirus positive?

Associated infection can influence prognosis and the choice of additional treatment.

Is specialist treatment needed?

A veterinary dentist, oral surgeon or feline medicine specialist may consider:

• Ciclosporin

• Interferon where available

• Other immunomodulating treatment

• Stem cell therapy

• Re-biopsy

• Additional imaging

• A structured palliative plan

Refractory FCGS is difficult, but “the teeth are gone, so nothing else can be done” is not an adequate conclusion.

What Happens After Dental Surgery?

Your cat may need:

• Strong pain relief

• Soft or moistened food

• Small, frequent meals

• A quiet recovery area

• Temporary appetite or anti-nausea medication

• Follow-up examinations

• Additional anti-inflammatory treatment

• Monitoring of body weight

Contact the treating clinic if your cat:

• Refuses food

• Cannot swallow medication

• Develops increasing facial swelling

• Has continuous bleeding

• Appears markedly painful

• Becomes very lethargic

• Repeatedly vomits

• Develops foul-smelling discharge

• Has sutures or wounds that appear to open

Do not brush the extraction sites until the veterinary team confirms they have healed.

When Is Stomatitis an Emergency?

Go to an emergency veterinary clinic immediately if your cat has:

• Open-mouth breathing

• Obvious difficulty breathing

• Rapidly progressing swelling of the face or throat

• Pale, blue or grey gums

• Collapse

• Inability to swallow

• Uncontrolled oral bleeding

• Severe weakness

• Major facial or jaw trauma

• Rapid deterioration over several hours

Seek same-day veterinary care if your cat:

• Has stopped eating

• Appears hungry but cannot pick up or swallow food

• Has continuous bloody drool

• Is severely painful

• Is dehydrated

• Has pus or a foul smell from the mouth

• Is losing weight rapidly

• Is hiding and unusually lethargic

• Develops significant facial swelling

A bright cat that is still eating but has suspected stomatitis can usually wait for a prompt daytime appointment. A cat that cannot eat comfortably should not wait several days for the mouth to “settle down”.

What Should You Do Right Now?

1. Watch how your cat eats

Observe from a distance.

Look for:

• Approaching and retreating from food

• Head tilting

• Chewing on one side

• Food being dropped

• Swallowing without chewing

• Crying or sudden withdrawal

• Excessive licking after meals

• Drool appearing while eating

2. Check general health

Monitor:

• Food intake

• Water intake

• Body weight

• Energy

• Grooming

• Breathing

• Vomiting

• Litter tray use

The mouth may be the obvious problem, but dehydration and weight loss change the urgency.

3. Offer manageable food

Soft or smooth food may be easier to eat while you arrange an appointment.

Warming food slightly can increase its smell and make it more appealing. Do not force-feed a cat with severe oral pain unless a veterinarian has provided a safe feeding plan.

4. Do not force the mouth open

A brief look is enough. Do not press on ulcers or pull the jaw open for photographs.

5. Stop tooth brushing

Brushing is not appropriate over ulcerated, bleeding or severely painful tissue.

6. Avoid human medication

Do not give or apply:

• Paracetamol

• Ibuprofen

• Aspirin unless specifically prescribed

• Human oral anaesthetic gel

• Human mouthwash

• Hydrogen peroxide

• Essential oils

• Tea tree oil

• Human steroid cream

• Leftover antibiotics

• Another animal’s medication

7. Arrange a veterinary assessment

Ask whether the clinic can provide:

• General anaesthesia with appropriate monitoring

• Full-mouth intraoral dental radiographs

• Tooth-by-tooth charting

• Surgical extraction

• Post-extraction radiographs

• Multimodal pain relief

• Biopsy where indicated

• Planned postoperative rechecks

Common Mistakes Owners Make

Assuming the cat is not in pain because they still eat

Many cats continue eating despite severe oral inflammation. Watch how they eat and how their behaviour has changed.

Treating the disease with repeated antibiotics

Antibiotics may temporarily reduce secondary infection but do not correct the underlying immune-mediated disease.

Depending on repeated steroid injections

Steroids may provide impressive short-term improvement while delaying definitive dental treatment and creating long-term adverse effects.

Accepting dental treatment without full-mouth X-rays

The roots and jawbone cannot be assessed by looking at the crowns. Radiographs guide extraction and help prevent retained roots.

Removing only the visibly damaged teeth

FCGS treatment is based on the distribution of oral inflammation and overall dental disease, not simply which crowns look worst.

Brushing an actively inflamed mouth

Home care should never become a daily wrestling match with ulcerated tissue. It increases pain and damages trust without controlling the disease.

Assuming extraction guarantees a cure

Most cats improve, but some require temporary or long-term medical management. Realistic expectations allow earlier recognition of refractory disease.

Delaying treatment because tooth removal sounds extreme

A painful tooth is not useful simply because it remains attached. The goal is a comfortable, functional mouth, not the highest possible tooth count.

Can Stomatitis Be Prevented?

There is no proven way to prevent every case of FCGS.

Practical steps that may reduce other oral disease and support earlier detection include:

• Arrange regular veterinary oral examinations.

• Introduce tooth brushing only when the mouth is healthy and comfortable.

• Use cat-safe dental products.

• Investigate persistent gingivitis rather than repeatedly monitoring it.

• Maintain an appropriate vaccination plan.

• Reduce exposure to FeLV and FIV according to your cat’s lifestyle.

• Avoid overcrowding where possible.

• Provide separate food, water, litter and resting resources in multi-cat homes.

• Monitor body weight and grooming.

• Seek care when eating behaviour changes.

• Attend all recommended post-extraction rechecks.

Home dental care can reduce plaque and periodontal disease. It cannot guarantee that an immune-susceptible cat will never develop FCGS.

Will My Cat Be Okay?

Many cats experience a major improvement in comfort and quality of life following comprehensive dental treatment.

Some achieve complete remission. Others remain comfortable with occasional medication. A smaller group develops refractory disease requiring ongoing specialist management.

What matters most is whether your cat can:

• Eat without hesitation

• Maintain weight

• Groom normally

• Interact with the family

• Sleep comfortably

• Avoid recurrent bleeding

• Avoid repeated painful flare-ups

• Live without continual high-dose medication

A cat does not measure quality of life by counting teeth. They measure it by whether eating, grooming and moving their mouth hurts.

Full-mouth extraction sounds confronting because owners naturally imagine how they would feel without their own teeth. Cats use their mouths differently, and removing chronic pain often produces a far greater improvement than preserving inflamed teeth.

Frequently Asked Questions

Can feline stomatitis go away on its own?

Persistent FCGS rarely resolves permanently without treatment. Symptoms may temporarily improve, but untreated inflammation and pain commonly return.

Does every cat with stomatitis need all their teeth removed?

No. Some cats may be treated by removing all premolars and molars, while cats with inflammation further forward may need full-mouth extraction. Dental radiographs and lesion distribution should guide the plan.

Is stomatitis contagious to my other cats?

The immune-mediated condition itself is not directly contagious. Associated viruses such as feline calicivirus, FeLV and FIV can be transmitted between cats through their respective routes.

Can a cat eat normally without teeth?

Yes. Most cats adapt well after healing and can eat wet food, softened food and often dry food. Removing painful teeth usually makes eating easier rather than harder.

Will antibiotics or steroids cure stomatitis?

Usually not. They may provide temporary relief or treat secondary infection, but dental extraction remains the main long-term treatment. Some refractory cats need carefully monitored immunomodulating medication after surgery.

Final Thoughts

Feline stomatitis is not ordinary red gums and it is not simply a bacterial infection. It is a painful, complex inflammatory disease that can affect eating, grooming, behaviour and overall quality of life.

The most important clinical decision is whether the inflammation extends beyond the gum margin and whether hidden dental disease is contributing. That cannot be answered properly with a quick look inside an awake cat’s mouth.

Full-mouth dental radiographs, complete treatment of diseased teeth, careful extraction technique and strong pain management give affected cats the best chance of recovery. Most improve substantially, but a significant minority need additional treatment, which is why postoperative follow-up matters just as much as the surgery itself.

Do not wait for your cat to stop eating completely. By that point, they may have been living with severe pain for far longer than anyone realised.

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If you are unsure whether your cat’s eating changes or oral inflammation can wait, or you need help understanding dental X-rays and extraction recommendations, ASK A VET™ can help you assess the warning signs and prepare the right questions for your veterinary team.