Petsolino is reader-supported blog. If you buy something through our posts, we may get a small commission. Read more here.

Cat hair loss is a common problem that can occur in both indoor and outdoor cats. It can be caused by a variety of factors, including allergies, parasites, bacterial or fungal infections, nutritional deficiencies, and stress. 

In this article, we’ll give you a list of the most common reasons cats lose hair. If you observe this in your cat, it’s good to know the possible reasons why this is happening. 

The Reasons For Cat Hair Loss

It is important to be aware of the causes and treatment options available if your cat is experiencing any degree of hair loss. While it can be easily treatable, in some cases, it’s possible that the hair loss is only a symptom of a more serious underlying health issue. 

That’s why it’s important to be prepared for any emergency, even if you think your cat’s hair loss is not that serious. As such, it’s good to take out a reliable pet emergency fund, which will help you to protect your furry friend in crisis. 

But as mentioned, there are a couple of reasons for hair loss in cats. 

tabby cat standing on grass

1. Flea Allergy: Fleas are the most common cause of cat hair loss. Cats can be allergic to flea saliva and when they are bitten; their skin can become inflamed, leading to hair loss.

2. Skin Infection: Fungal or bacterial infections can be the reason for hair loss. Common signs of a skin infection are scabs, redness, and itching.

3. Stress: Stress can cause kitties to pull out their fur or over-groom. Common causes of stress can include changes in the environment, a new pet in the home, or a medical condition. Stress can also be a source of cat hair loss, particularly if the kitty is in a new home or has been through a traumatic experience. 

To reduce stress, you should make sure your cat has plenty of places to hide and a safe environment to explore. You should also ensure your cat is getting enough exercise and stimulation.

4. Alopecia: Alopecia is a condition that results in patchy hair loss and is more common in older cats.

bald patches on a black cat

5. Endocrine Disorders: Hormonal imbalances can lead to hair loss. Common reasons for endocrine disorders in cats include diabetes, hyperthyroidism, and hypothyroidism.

6. Allergies: Your furry friend can be allergic to foods, fleas, dust, pollen, and other environmental factors. Allergies can lead to hair loss and skin irritation.

7. Nutrition: Poor nutrition can also result in cat hair loss. Cats need a balanced diet of proteins, vitamins, fats, and carbohydrates to stay healthy. If your kitties are not getting enough of the right nutrients, they may start to lose their fur. Making sure your cat is getting enough of the right foods can help to prevent hair loss.

If your cat is losing its hair, it is important to take them to the vet for a check-up. The vet will be able to diagnose the cause and suggest a suitable treatment plan.

Cat Hair Loss: Treatment

kitty on a box

1. Check for parasites: If your cat is suffering from hair loss, an infestation of parasites such as fleas or mites is a likely cause. Your veterinarian can help you identify and treat any parasitic infections.

2. Change your cat’s diet: A diet lacking essential fatty acids, such as omega-3 fatty acids may cause hair loss. Ask your veterinarian to recommend a diet that will provide your kitty with the necessary nutrients.

3. Reduce stress levels: Unfamiliar surroundings, changes in routine, or other stressful events can trigger hair loss. Try to keep your cat’s environment as consistent and stress-free as possible.

4. Rule out medical conditions: Hormonal imbalances, allergic reactions, and fungal or bacterial infections can all cause hair loss. Your veterinarian can rule out any medical conditions and prescribe appropriate treatment if necessary.

grey cat

5. Consider supplements: Certain supplements may help reduce inflammation and promote hair growth. However, always check with your veterinarian before giving any supplement or medication to your cat.

6. Consider topical treatments: Your veterinarian may recommend a topical cream or ointment to help stimulate hair growth.

7. Groom your cat regularly: Regular grooming will help remove dead hair and stimulate new growth.

Cat hair loss treatment depends largely on the cause of the hair loss. In cases of parasites like fleas, treating the underlying cause will usually resolve the issue. For hormonal imbalances, medications may be necessary to regulate the hormones and promote hair growth. 

cat hair fall

For underlying medical conditions, the vet may prescribe medications or suggest dietary changes to help improve the cat’s health. Finally, if the hair loss is due to stress, environmental changes may be necessary to reduce the cat’s stress levels. 

No matter what the cause of the hair loss is, it’s important to seek veterinary care and discuss the best treatment options for your cat.


Cat hair loss can be caused by many factors, including allergies, parasites, fungal infections, hormone imbalances, endocrine disorders, and nutritional deficiencies. Treatment of the underlying cause is necessary to stop hair loss in cats. 

Depending on the cause, treatment may include a special diet, medication, and/or topical products. A veterinarian can help diagnose the underlying cause and recommend an appropriate treatment plan.