Home » Symptoms » Cat Symptoms A-Z » Inflammation of the Gums (Redness, Swelling, Bleeding Gums)

Inflammation of the Gums (Redness, Swelling, Bleeding Gums) in cats

Author: Dr. med. vet. Gisa Löwe | Last modified: 17.02.2026

When to visit the vet?

Non-urgent see a veterinarian within 2–3 days

If the condition worsens / symptoms persist, consult a veterinarian.

Unsure about what’s wrong with your pet? Feel free to use our Symptom Checker for more clarity

Definition

Inflammation of the gums in cats, also known as gingivitis, is a condition characterized by redness, swelling and sometimes bleeding of the gums. It is often an early stage of dental disease that, if left untreated, can lead to more serious dental problems.

Can Occur with the Following Diseases:

Basics and possible causes

Inflammation of the gums in cats is usually caused by the buildup of plaque and tartar (calculus). Plaque is a soft, sticky film of bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. that forms on the teeth. If plaque is not removed, it can harden and form tartar (calculus). The bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. in plaque release toxins that irritate the gums and cause inflammatory conditions.

Another cause of gingivitis can be systemic diseases such as FelineFeline refers to anything related to cats. The term is used to describe diseases, behaviors, or anatomical aspects that are specific to cats. Immunodeficiency VirusA virus is a microscopic infectious particle that cannot reproduce on its own and must infect a host cell to produce new virus particles. Viruses can cause a variety of diseases in humans, animals, and plants. (FIV) or FelineFeline refers to anything related to cats. The term is used to describe diseases, behaviors, or anatomical aspects that are specific to cats. Leukemia VirusA virus is a microscopic infectious particle that cannot reproduce on its own and must infect a host cell to produce new virus particles. Viruses can cause a variety of diseases in humans, animals, and plants. (FeLV), which weaken the cat’s immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. and make it more susceptible to infections. MetabolicMetabolic refers to metabolism, i.e. the entirety of chemical processes that take place in a living organism to enable life processes. Metabolic disorders can cause a variety of Diseases in Dogs and cats. diseases such as diabetes can also increase the risk of gingivitis.

Feeding habits also play a role. Cats that are fed mainly soft food may be more prone to dental problems, as chewing dry food can help mechanically remove plaque from the teeth. An unbalanced diet that leads to a deficiencyDeficiency means a lack or absence of a necessary substance required for normal bodily functions or health, such as vitamins, minerals, or hormones. of certain vitamins and minerals can also impair dental health.

Genetic factors can also play a role. Some cat breeds may be predisposed to dental problems, and individual differences in the immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. can determine how susceptible a cat is to gingivitis.

Typical accompanying symptoms

Bad breath: often the first sign of dental problems and can be caused by bacterial infections in the mouth.
Decreased appetite or refusal to eat: Pain in the mouth can cause the cat to eat less or refuse to eat altogether.
Expressions of pain when chewing: The cat may show pain when chewing food or toys, or shift food to one side of the mouth.
Changes in behavior: a cat with gingivitis may become irritable or withdrawn because it is suffering from chronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. pain.
Increased salivation: Inflamed gums can lead to increased saliva production, often accompanied by blood or pus.
Weight loss: If the cat eats less due to pain, this can lead to unwanted weight loss.

When to see a vet?

Eskalation: ORANGE for spontaneous bleeding without plaque, bleeding sites (nose/eye), refusal to eat, or fever. RED for signs of a clotting disorder/anemia.

A visit to the vet is essential if you notice any of the symptoms above in your cat. Especially if your cat is not eating or is losing weight, a veterinary examination should be carried out immediately, as these symptoms can indicate serious health problems.

If you notice blood in the saliva or when brushing teeth, this is a clear sign that a professional examination is necessary. ChronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. gingivitis can lead to periodontitis, a more serious form of gum disease that can damage the jawbone and the tooth-supporting structures.

Symptom recognition for the pet owner and veterinary diagnostic procedure

As a pet owner, you can spot gingivitis by checking your cat’s mouth regularly. Watch for redness, swelling, and bleeding gums. An unpleasant smell from the mouth can also be a sign of a problem.

The vet will first carry out a thorough examination of the oralOral means "through the mouth" and refers to the intake of food, medication, or other substances through the mouth. In veterinary medicine, many treatments are administered orally. cavity. This includes lifting the lips to inspect the gums and teeth. A full diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. may also include a dental cleaning under anesthesiaAnesthesia refers to the state of insensitivity to pain and can be partial (local anesthesia) or for the entire body (general anesthesia). It is used to keep patients pain-free during surgical procedures. to remove plaque and tartar (calculus) and examine the teeth thoroughly.

In some cases, X-rays of the jaw may be necessary to assess the condition of the tooth-supporting structures and detect hidden problems. Blood tests may be performed to rule out systemic causes of gingivitis.

What the pet owner can do and professional therapy options

As a pet owner, you can take some steps to support your cat’s dental health. Regular toothbrushing with a special cat toothpaste can help remove plaque and prevent tartar (calculus) from forming. Start slowly and gradually get your cat used to toothbrushing.

Feeding dry food can help mechanically remove plaque. There are also special dietary foods designed to promote dental health. These often contain ingredients that help reduce plaque and tartar (calculus).

Regular veterinary check-ups are crucial to detect and treat dental problems early. If your cat already has gingivitis, the vet may prescribe special treatments or medication to reduce inflammation and relieve pain.

Follow your vet’s recommendations regarding dental care and feeding your cat. Early and consistent care can help prevent serious dental problems and improve your cat’s quality of life.

Outlook on current research

Inflammation of the gums in cats, also known as gingivitis, is a common symptom that can indicate various underlying problems. Current research focuses on the role of bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. and the microbiome in cats’ mouths. Scientists are investigating which specific bacterial species are associated with gingivitis in cats and how the bacterial balance in the mouth changes when inflammation occurs. These studies aim to develop new diagnostic and treatment approaches that are more targeted and effective.

Another important area of research looks at the role of the immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. in the development of gingivitis. Researchers are studying how the immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. responds to bacterial attacks and why some cats develop excessive inflammatory reactions. The aim is to find out whether genetic or environmental factors influence the immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. and how these findings can be used to develop preventive measures.

Developing new therapeutic strategies is also a focus of current research. Scientists are working on vaccines that could strengthen cats’ immune systems to help prevent gum disease. Work is also being done to improve dental care products such as special toothpastes and mouth rinses with antibacterial and anti-inflammatory properties to promote gum health.

In addition, research is looking at how diet and lifestyle affect the occurrence of gingivitis in cats. Studies show that a balanced diet and regular dental care play an important role in preventing gingivitis. Researchers are investigating which specific nutrients or diets can reduce the risk of gingivitis.

Finally, the development of new diagnostic methods is another important area of research. Work is currently underway to improve imaging techniques and develop simple tests that can indicate inflammation in the gums at an early stage. These advances could make it possible to detect and treat gingivitis in cats earlier, before it leads to more serious problems.

Frequently asked questions

What are the most common signs of gingivitis in cats? The most common signs are redness, swelling, and bleeding gums. Cats with gingivitis may also have bad breath and show difficulty eating.
Can gingivitis in cats lead to other health problems? Yes, untreated gingivitis can lead to more serious gum diseases such as periodontitis, which can damage the teeth and jawbone. It can also increase the risk of systemic diseases, as bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. from the mouth can enter the bloodstream.
How is gingivitis diagnosed in cats? A vet can diagnose gingivitis through a clinical examination of the cat’s mouth. In some cases, X-rays may be needed to determine the severity and rule out other dental problems.
What treatment options are there for gingivitis in cats? Treatment may include a professional dental cleaning, removal of tartar (calculus), and, if necessary, antibiotic therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions.. In severe cases, surgery may be required to remove damaged teeth.
How can I prevent gingivitis in my cat? Regular dental care, including brushing with a special cat toothpaste, and a balanced diet can help prevent gingivitis. Regular veterinary check-ups are also important.
Can my cat’s diet affect gingivitis? Yes, a poor diet can increase the risk of gingivitis. A balanced, nutrient-rich diet can help keep the gums healthy.
Are certain cat breeds more susceptible to gingivitis? Some cat breeds, such as Persians and Maine Coons, are more prone to dental problems, including gingivitis, due to their genetic predispositionA predisposition is an innate inclination or susceptibility of an organism to certain diseases or conditions. In dogs and cats, there may be a genetic predisposition to certain conditions such as hip dysplasia or certain heart diseases. and anatomical features.
Can gingivitis in cats heal on its own? In the early stages, mild inflammatory conditions can subside with improved dental care and diet. However, veterinary treatment is required for more advanced inflammatory conditions.
How often should I brush my cat’s teeth to avoid gingivitis? Ideally, a cat’s teeth should be brushed daily. If that’s not possible, they should be cleaned at least several times a week.
Can gingivitis cause pain in cats? Yes, gingivitis can be painful for cats, especially if the gums are severely inflamed or bleeding. This can cause the cat to eat less or change its behavior.