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Four Common Causes of Hair Loss in Cats

There are many potential causes of hair loss in cats. Some conditions are minor and easy to deal with, while others can be a bit more serious. Let's take a look at some of the main reasons why your cat's fur could be falling out.


If your cat spends a lot of time outside, then he will easily be exposed to fleas. One of the more common reasons why cats start losing their hair is because they're allergic to flea bites. Also, it doesn't take many of these parasites to cause a problem, as some cats develop an intense reaction to just one bite. This condition can be treated using effective flea control, antihistamines, and steroids.


Another parasite that can cause hair loss in cats is the mite. Mange is a condition that can be brought on by various species of mites. An infestation of these parasites will cause intense itching that prompts your cat to lick and chew himself excessively. This eventually causes the hair to fall out. Mites can be dealt with by using medicated shampoos. Cats with longer hair will also need to get it trimmed closely.


Ringworm is caused by a fungus that can also affect dogs and humans. If it affects your cat, it will cause hair to fall out especially around the ears, paws, and face. Your cat will also develop dry, flaky skin in the affected areas. Ringworm can be treated using either topical or oral medications.

Medical Conditions

There are a range of medical conditions that can cause hair loss in cats. These disorders usually affect the thyroid or adrenal gland. Addison's and Cushing's disease are two conditions that affect the adrenal gland. The former is characterized by increased adrenal activity, while the other results from decreased in activity from the adrenal gland.

Two other disorders that can cause feline hair loss are hypothyroidism and hyperthyroidism. Like their names suggest, they are brought on by problems with the thyroid gland. These hormone imbalances are common reasons why cats start to lose their hair.

These are some of the most common causes of hair loss in cats. Now that you know this, you should learn about other conditions that can affect your feline like feline kidney failure. provides a wealth of information on a wide range of diseases. So, stop by today to learn about some of them such as the feline leukemia virus.

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