17 Most Common Cat Diseases You Should Know

There are many different diseases that can affect cats, some of which are more common than others. In this blog post, we will take a look at some of the most common cat diseases and what you can do to help your cat if they are affected by one of them.


Lower Urinary Tract Disease

Urinary tract disease is one of the most common cat diseases, and it can have a serious impact on your cat’s health. If your cat is showing signs of urinary tract disease, it’s important to take them to the vet for a diagnosis and treatment.

There are a few different types of urinary tract disease, and each one can cause different symptoms. Some of the more common symptoms of urinary tract disease include:

  •  difficulty urinating
  •  straining to urinate
  •  blood in the urine
  •  increased frequency of urination
  •  urinating outside of the litter box

If your cat is showing any of these symptoms, it’s important to take them to the vet for a checkup. Early diagnosis and treatment is key to preventing serious health problems down the road.

Common Cat Diseases


Diarrhea is a common problem in cats, and can have a number of different causes. It is important to determine the cause of the diarrhea so that proper treatment can be given. Here we will discuss some of the common causes of diarrhea in cats and what you can do to help your furry friend feel better.

One of the most common causes of diarrhea in cats is a food intolerance or sensitivity. If your cat is eating a new food or has recently changed foods, this could be the cause of the diarrhea. Some cats are alsosensitive to certain ingredients in cats food, such as wheat or corn. If you suspect your cat has a food intolerance, it is best to speak with your veterinarian about switching to a different food.


Diabetes is a serious health condition that can affect cats of all ages. If your cat has been diagnosed with diabetes, it is important to understand the basics of the condition and how to best care for your feline friend.

There are two main types of diabetes that can affect cats, Type 1 and Type 2. Type 1 diabetes is when the pancreas does not produce enough insulin, while Type 2 diabetes is when the body does not use insulin properly. Regardless of the type, diabetes can lead to a number of serious health complications, so it is important to seek treatment right away.

There are a number of different treatment options available for cats with diabetes. Your veterinarian will develop a treatment plan that is best for your cat based on the severity of the condition. In some cases, insulin injections may be necessary.



Rabies is a serious and often fatal disease that can affect all mammals, including cats. The rabies virus is transmitted through the saliva of infected animals, usually through a bite. Once an animal is infected with rabies, the virus travels to the brain, where it causes inflammation and death.

There is no cure for rabies, and once an animal shows signs of the disease, it is often too late to save them. However, there are steps you can take to protect your cat from rabies. Vaccinating your cat against rabies is the best way to prevent the disease.


Eye Problems

Cats are susceptible to a variety of eye problems, some of which can be serious. Some common eye problems in cats include:

Conjunctivitis: This is an inflammation of the conjunctiva, the clear tissue that covers the white part of the eye. Conjunctivitis can be caused by allergies, infections, or foreign bodies in the eye.

Glaucoma: This is a condition in which the pressure inside the eye becomes too high. It can be painful and can lead to blindness if not treated.

Cataracts: This is a condition in which the lens of the eye becomes cloudy. Cataracts can cause vision problems and may eventually lead to blindness.

Eye problems can often be treated successfully if they are caught early, but they can lead to blindness if they are left unchecked.



One of the most common diseases that affect cats is worms. There are many different types of worms that can infect cats, and they can cause a variety of symptoms. Some of the most common symptoms of worms in cats include weight loss, vomiting, diarrhea, and a decrease in appetite. If your cat has any of these symptoms, it’s important to take them to the vet for a checkup.

There are many different types of worms that can infect cats, but the most common are roundworms and tapeworms. Roundworms are usually transmitted through contaminated food or water, while tapeworms are usually transmitted through fleas. Therefore, it’s important to keep your cat away from areas where they could come into contact with contaminated food or water, and to regularly treat them for fleas.



There are many species of flea that parasitize cats, but the most common is the cat flea (Ctenocephalides felis). These small, wingless insects are proficient jumpers and can easily move from one host to another. Fleas are a nuisance to cats and can cause skin irritation, allergies, and even anemia.

These tiny insects feed on your cat’s blood, causing irritation and itchiness. In some cases, fleas can also transmit diseases to your cat.

There are a few things you can do to remove fleas from your cat. First, you’ll want to comb your cat’s fur with a flea comb(a comb with closely spaced teeth) to remove any adult fleas. Next, you can vacuum your home to remove any fleas or flea eggs that may be lurking.

There are many products available to treat fleas, and your veterinarian can help you choose the best one for your cat.

Fleas in Cats

Heart Problems

Cats are susceptible to a number of heart problems, which can often be difficult to detect. If you think your cat may be suffering from a heart problem, it’s important to take them to the vet as soon as possible. Heart problems can progress quickly and can be fatal if left untreated.

Some common heart problems in cats include heartworm disease, cardiomyopathy, and valve disease. Heartworm disease is caused by parasitic worms that live in the heart and can be deadly if not treated. Cardiomyopathy is a disease of the heart muscle that can lead to heart failure. Valve disease is a problem with the valves in the heart, which can cause the heart to work less efficiently.


Kidney Failure

Kidney failure is a common health problem in cats. It can be caused by many things, including infection, injury, or disease. Symptoms of kidney failure include increased thirst, decreased appetite, weight loss, and vomiting. If not treated, kidney failure can be fatal.

There are two types of kidney failure in cats: acute and chronic. Acute kidney failure comes on suddenly and can be caused by things like dehydration or ingesting toxic substances. Chronic kidney failure is a more gradual condition that is often the result of an underlying health problem.

There are many causes of kidney failure in cats, but the most common is chronic renal disease, which is a progressive decline in kidney function over time. Other causes include congenital defects, cancer, and infection. Treatment for kidney failure depends on the underlying cause and may include medication, dietary changes, and dialysis.


Infectious Peritonitis

Infectious peritonitis is a serious and potentially life-threatening condition that can affect cats of all ages. It is caused by a bacteria or virus that invades the abdomen and causes inflammation of the membrane that lines the abdominal cavity (the peritoneum). Symptoms of infectious peritonitis include fever, loss of appetite, abdominal pain, and vomiting. If left untreated, infectious peritonitis can lead to organ failure and death.

Fortunately, infectious peritonitis is relatively rare in cats, and with prompt treatment, most cats make a full recovery.



Distemper is a serious and potentially fatal disease in cats. It is caused by a virus that attacks the respiratory, gastrointestinal, and nervous systems. Symptoms of distemper include fever, runny nose, watery eyes, lethargy, vomiting, and diarrhea. If your cat shows any of these symptoms, you should take them to the veterinarian immediately.

There is no cure for distemper, but there are treatments that can help your cat manage the symptoms and improve their quality of life.


Herpes Virus

The herpes virus is a common virus that can infect both cats and humans. It is usually spread through contact with an infected animal, such as through petting a cat with the virus. The virus can also be spread to humans through contact with infected saliva, mucus, or skin Lesions.

Symptoms of the herpes virus in cats include eye discharge, sneezing, and fever. The virus can also cause more serious problems, such as pneumonia, and can be deadly in young kittens. There is no cure for the virus, but it can be treated with antiviral drugs.



Cancer is a major health concern for cats, with approximately one in four cats developing the disease at some point in their lives. While the exact cause of cancer is unknown, there are several risk factors that have been identified, including age, weight, diet, and exposure to certain chemicals.

There are many different types of cancer that can affect cats, with the most common being lymphoma, leukemia, and skin cancer. Early diagnosis is crucial for successful treatment, so it’s important to be aware of the signs and symptoms of cancer in cats.


Feline Immunodeficiency Virus (FIV)

The feline immunodeficiency virus (FIV) is a Lentivirus that affects cats. Lentiviruses are a group of viruses that includes the human immunodeficiency virus (HIV). FIV is similar to HIV in that it attacks the immune system and can lead to a condition called acquired immunodeficiency syndrome (AIDS). However, FIV is species-specific and cannot be transmitted to humans or other animals.

There is no cure for FIV, but there are treatments available that can help manage the virus and keep infected cats healthy for many years.

Cat Disease Treatment


Calicivirus is a common virus that infects cats. It is usually mild, causing only a fever and some mouth ulcers. However, in some cases it can cause more severe illness, including pneumonia.

There is no specific treatment for calicivirus, but most cats will recover on their own. If your cat is showing signs of illness, please contact your veterinarian.

There are vaccines available to help protect against calicivirus, and we recommend that all cats be vaccinated against it.



Panleukopenia is a highly contagious and often fatal disease that affects cats of all ages. The disease is caused by a virus that attacks the white blood cells, which are vital for fighting infection. Symptoms of panleukopenia include fever, lethargy, loss of appetite, vomiting, and diarrhea. There is no specific treatment for panleukopenia, so prevention is the best way to protect your cat.

A vaccine is available for panleukopenia, and all cats should be vaccinated against the disease. The vaccine is typically given as a series of two or three shots, starting at around 8 weeks of age. The vaccine is then given again at 12 and 16 weeks of age, and then once a year for the rest of the cat’s life.



Parvovirus is a highly contagious virus that can infect cats of all ages. The virus is most commonly spread through contact with infected feces, and it can quickly spread through a population of cats. The virus can cause severe diarrhea, vomiting, and dehydration, and it can be fatal if not treated quickly.



As a responsible cat owner, it is important to be aware of the most common cat diseases so that you can recognise the symptoms and take appropriate action. While some of these diseases can be vaccinated against, others have no cure and can be fatal. It is therefore important to take precautions to protect your cat from these diseases.

If you have any concerns about your cat’s health, please consult your veterinarian.

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Riya Agarwal
Riya Agarwal is an experienced content writer who loves animals. She is the proud owner of a Labrador, who she loves to take on long walks. Riya works hard to bring fresh and creative content to her clients, blending her knowledge and experience with her passion for animals. Riya is committed to creating content that sparks conversations and encourages readers to think more deeply about the world around them.

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