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Causes of Hair Loss in Cats: Stress, Allergy, Ringworm and Parasites


© Caroline Anderson

Cats lose hair for a variety of reasons. Some shedding is normal and necessary, but other types of hair loss may need a vet’s attention.

Hair Loss Caused by Stress or Allergy

Sudden hair loss can be a result of stress, though it’s usually disseminated to small areas all over the body, so it is not as noticeable. Not surprisingly, this type of hair loss is commonly seen at the vet.

If the cat sheds enough to cause real bald spots, it may indicate another health problem. Stress can cause some cats to over-groom and remove too much hair, or even bruise their skin. When this happens, the cause of the stress needs to be identified and eliminated.

If  the cat’s environment -  food, humidity levels, exposure to other animals - changes your can may react by developing an allergy or reaction in the skin or coat. An animal bite or scratch, or an insect sting can also cause bald spots and should be treated to prevent an abscess.

Hair Loss Caused by Parasites, Fungi, Bacteria or Viruses

Parasites, bacteria, virus or fungi infections are rare, but they can have an effect on a cat’s skin and coat. Ringworm, a contagious fungal infection, is the most common cause of spot baldness in many animals. Longhaired cats and very young kittens are most susceptible to it. If your cat has ringworm, be sure to wash your hands after you touch him.

Another common cause of hair loss in cats is parasite infestation, such as fleas, mites, or ticks. Flea problems usually affect the back and the base of the tail. The best way of detecting and preventing this type of irritation is good grooming.

As always, check with your vet for any condition that requires verification and medicated treatment.

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Here's the follow-up discussion on this article: View all related messages

66.   Apr 22, 2006 10:11 AM
I've been having a problem with my cat for a few months now.. My sister picked up a stray cat that was terribly infested with fleas and etc and gave him treatment and it went away, and than we moved i ...

-- posted by ex0r


65.   Mar 21, 2006 5:13 PM
In response to cat hair loss posted by candygirl54:

I was wondering if you have any more information on your cats hair loss? I have two ca ...

-- posted by sf4ever63


64.   Mar 1, 2006 12:57 PM
same with mine... it happened a while ago same places - near teets and sides of hind legs- and grew back but noticed a small patch last night. when i touched it she wasn't bothered. looks like she may ...

-- posted by boguski


63.   Feb 24, 2006 9:41 AM
7 year old cat is losing hair started on his belly and seems to be falling out on sides of legs also . any idea what this might be? ...

-- posted by candygirl54


62.   Dec 26, 2005 2:49 PM
We have the same problem with our female black cat she is about 3yrs and she is spayed and is losing her hair in her hind quarters.. Her owner has gone out of town could that be causing her to stres ...

-- posted by poh28301





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