10 common diseases in cats

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Our living room felines are resistant animals. They are however much more susceptible to diseases than we might think. They are indeed exposed to many pathologies whose origin is viral, bacterial or parasitic and whose consequences are more or less serious. Among these, we invite you to discover the 10 most common cats diseases  in order to help you better identify the risks for your little companion.

cat diseases

Cat acne

The cat with acne shows signs on the chin and lower lip due to inflammation of the sebaceous glands. Blackheads and small scabs can be observed which then turn into pimples, edemas and more or less serious fistulas.

Feline acne is relatively well treated, but once the animal has it, it can develop it again several times during its life. If it is difficult to identify the origin, contact with plastic seems to be a favoring factor in the most sensitive tomcats.

 As a result, many veterinarians advise against plastic bowls and recommend glass, ceramic or stainless steel instead.

Borreliosis or Lyme disease

Rarer in cats than in doggies, Lyme disease, known by the scientific name of borreliosis, is transmitted by the bites of ticks which are themselves infested with the bacteria responsible for this pathology. Borreliosis should not be neglected and it is necessary to regularly check the coat of the cat in search of possible ticks.

If it has frequent access to the outside. Any tick bite must require immediate removal using a tick puller (never tweezers!) and local disinfection using an antiseptic. In general, if the tick is removed before 24 hours, the risk is almost zero, provided it is removed properly so that it does not release bacteria into the body of its host.

The first signs of borreliosis appear between 2 and 3 months after the bite. The cat is tired, it loses its appetite and has a more or less high fever. It is imperative to quickly administer antibiotic treatment, otherwise the inflammation can lead to muscle stiffness and paralysis. 

In the event of serious damage, the disease can reach the kidneys or the heart and considerably worsen the state of health of the cat, even causing its death.

In prevention, the regular administration of anti-flea and anti-tick solutions remains the most recommended and effective method to ward off parasites.


In its feline form, chlamydia is caused by the presence of the bacteria. Cats living in communities are the most affected, because it is easily transmitted by contact with ocular and nasal secretions. The sick cat suffers from conjunctivitis, runny nose, sneezes and coughs frequently. His eyelids may be swollen and red.

The more the immune system of the cat is weakened, the more the chlamydiosis is important and of a serious form. It can spread to the lungs and cause serious complications.

It also frequently occurs as a result of untreated or poorly treated coryza and can be transmitted to humans with weakened immune systems. To prevent chlamydiosis, vaccination remains the most effective solution.


Also nicknamed cat flu, coryza is a very widespread feline disease , in particular because of its high contagiousness. The affected animal presents fever and runny nose and eyes, often sneezing, like a bad cold.

 Without prompt treatment, the disease spreads and worsens, causing mouth ulcers, breathing problems and lung damage.

It is important to consult the veterinarian quickly to set up an appropriate treatment, because it is long-lasting and the state of health of the animal weakens very quickly. 

Once infected, the cat remains a carrier of the virus throughout its life. He can infect other toms even without showing symptoms and he can develop recurrences at any time. 

Nevertheless, it is possible to prevent the disease by having the cat vaccinated against coryza every year.

Feline Viral Leukemia (FeLV)

Feline viral leukemia is a serious infection that causes various conditions that lead to weakening of the animal and, in 90% of cases, to its death within a few months or a few years. It should not be taken lightly, as there is no treatment to cure it.

Feline viral leukemia causes various secondary conditions, including cancers and severe immunodeficiency. The cat is tired, dejected, it has fever, diarrhea, runny nose and eyes. The animal loses its appetite, loses weight and is anemic. He may also develop neurological disorders.

Feline leukosis

This very serious pathology is easily transmitted between cats in contact with saliva, blood, but also during sexual intercourse and breastfeeding of the young by the affected mother. Sneaky, this viral disease caused by the feline leukemogenic virus is sometimes only visible several years after contamination. Nevertheless, during all this time, the cat is contagious, even in the absence of symptoms.

feline pancreatitis

Feline pancreatitis , the origin of which remains unknown, affects all cats, regardless of their age and sex. A distinction is made between chronic pancreatitis and the acute form, which is easier to identify due to the sudden onset of symptoms. 

The affected cat loses its appetite, loses weight and suffers from abdominal pain, sometimes jaundice. It is imperative to act very quickly, because the disease progresses rapidly. If in doubt, consult your veterinarian.


This serious illness is highly contagious and is caused by a retrovirus similar to that which causes human AIDS. However, FIV is not a zoonosis and cannot infect humans. Raising a cat with AIDS therefore poses no risk to its owners.

It is not uncommon for a cat with feline AIDS to show the first symptoms of the disease only a few years after being infected. However, this does not prevent it from contaminating others.

 The first visible clinical signs are a high fever, an increase in lymph nodes and significant weight loss. Subsequently, the cat suffers from diarrhea and vomiting, then multiple skin problems, in the mouth, eyes and nose.

You should know that feline AIDS systematically leads to the death of the cat.

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