top of page

5 Reasons Why Cats Lose Hair

A cat grooming itself

If your cat is losing hair, it's natural to feel worried. It can manifest as bald patches, thinning fur, or excessive shedding. Other signs include redness, swelling, or sores on the skin.

While fur loss and bald spots can be alarming, they are often a natural occurrence. However, excessive hair loss can result from environmental factors such as stress or allergies, or it could signal an underlying health issue that needs medical attention. 

It's crucial to communicate with your veterinarian to determine the cause of your cat's hair loss. Understanding the root causes is crucial for effective treatment and management. 

This article explores five common reasons for cat hair loss and provides insights into symptoms, treatments, and preventive measures.

5 Common Cat Hair Loss Reasons

A cat scratching itself

1. Allergies

Environmental Allergies

Environmental allergens such as pollen, dust, and mould can trigger reactions in cats. Symptoms include itching, redness, and hair loss. Managing these allergies often involves minimising exposure and using antihistamines or steroids.

Food Allergies

Food allergies can cause itching and hair loss. An elimination diet helps identify the allergen. Once identified, avoiding the allergen can prevent symptoms. Any elimination diet should only be carried out under the direction of a Veterinary surgeon.

2. Dermatological Issues

Parasites and Infections

Parasites, such as demodex or sarcoptes (fox mange) mite, and infections such as ringworm can lead to hair loss. These conditions cause intense itching and discomfort. Treatments include antifungal medications, parasiticides, or topical treatments.

Flea Allergy Dermatitis

Flea bites can cause severe allergic reactions, leading to hair loss. Regular flea control and treatment of infestations are essential to manage this condition.

3. Hormonal Imbalances


An overactive thyroid gland can cause symptoms like weight loss, hyperactivity, and hair loss. Treatment options include medication, radioactive iodine therapy, or surgery.

4. Nutritional Deficiencies

Common Deficiencies

A balanced diet is crucial for maintaining healthy skin and fur. Deficiencies in protein, zinc, and vitamin A can lead to hair loss. Ensuring a well-balanced diet with all essential nutrients helps prevent these issues.

You should not try to supplement these without advice from a veterinarian.

5. Behavioural Causes

Stress and Anxiety

Stress and anxiety is a very common reason for cats to over-groom, leading to hair loss. Identifying stressors and creating a calm environment can help reduce this behaviour.

When to Consult a Veterinarian

A cat at the vets for hair loss

Professional diagnosis is essential for identifying the exact cause of hair loss. A veterinarian can perform tests and recommend appropriate treatments.

You should consult a veterinarian about your cat's hair loss if you notice sudden or severe hair loss, significant changes in the skin such as redness, swelling, sores, or scabs, or behavioural changes like excessive grooming, scratching, or licking. 

Additionally, if your cat exhibits other symptoms such as weight loss, lethargy, or changes in appetite, or if the hair loss persists despite addressing potential environmental factors, seeking professional veterinary advice is crucial. 

A proper diagnosis is essential to ensure your cat receives the appropriate treatment.

Home Remedies and Prevention

Grooming Techniques

Regular grooming is essential for maintaining your cat’s coat health. It helps remove loose hair and prevents matting, which can lead to skin irritations. Frequent brushing also allows you to detect skin issues such as parasites, infections, or allergies early. Use a brush suited to your cat's fur type and be gentle to avoid causing stress or skin damage.

Dietary Supplements

Incorporating dietary supplements may improve your cat's skin and coat health. Omega-3 fatty acids, found in fish oil, are known to reduce inflammation and promote healthy skin. These supplements can be added to your cat’s diet after consulting with your veterinarian to ensure proper dosage and suitability for your pet’s specific needs.

Final Thoughts on Managing Cat Hair Loss

Understanding the reasons behind your cat's hair loss is the first step in finding an effective solution. If you notice any symptoms, consult your veterinarian to ensure your cat receives the best care possible.

By following these guidelines and preventive measures, you can help maintain your cat's health and keep their coat shiny and full. 

If you’re concerned about your cat’s fur, contact our team via 020 8459 4729.
A call to action


Order Dr Hannah Parkin's Amazing Guide To Caring For Your New Puppy.
Recent Posts
Follow Us
  • Linkedin
  • Instagram
  • Youtube
  • Facebook
bottom of page