Is your four-legged friend suffering from hair loss? Although some shedding is normal, excessive hair loss can be a sign of an underlying health problem. In this article, we explore the causes, symptoms, diagnosis and treatment of hair loss in dogs, so that you can provide your furry friend with the best possible care.

What is Hair Loss?

Hair loss, also known as alopecia, refers to the loss of hair in dogs. It can range from thinning of the coat to bald patches. Whilst some forms of hair loss are normal, such as seasonal shedding, abnormal hair loss may indicate a health problem.

Seasonal Shedding

Many dog breeds undergo seasonal shedding, losing their coat in response to changing temperatures. This is a normal process and usually requires no medical intervention.

Permanent Hair Loss

Permanent hair loss may indicate an underlying medical condition and requires further investigation by a veterinarian.

Why is it Important to Understand Hair Loss?

Understanding the causes and symptoms of hair loss in dogs is crucial for taking timely action and seeking the right treatment. Early diagnosis and treatment can increase the chances of recovery and reduce your dog’s discomfort.

Hair Loss in Dogs: Internal Causes

Hair loss in dogs can be caused by various internal factors, including:

• Genetic factors: Some breeds are genetically prone to hair loss, such as the Mexican Hairless Dog and the Chinese Crested Dog.
• Hormonal imbalance: Hormonal disorders such as hypothyroidism (an underactive thyroid) and Cushing’s disease (overproduction of cortisol) can cause hair loss.
• Allergies: Food allergies or allergies to environmental factors such as pollen, dust or insect bites can lead to hair loss, often accompanied by itching and skin irritation.

Genetic Factors

Some breeds are genetically more prone to hair loss. This can range from mild to severe and often cannot be completely prevented.

Hormonal Imbalance

• Hypothyroidism: A deficiency in thyroid hormones can lead to dry skin and hair loss.
• Cushing’s Disease: Overproduction of cortisol can cause thinning hair and skin problems.

Allergies

• Food allergies: Some dogs may be allergic to certain foods, which can result in hair loss and skin irritations.
• Environmental Allergies: Allergens such as pollen, dust and mould can also cause hair loss.

Hair Loss in Dogs: External Causes

In addition to internal factors, external causes can also contribute to hair loss in dogs:

• Parasites: Fleas, ticks and mites (such as those causing scabies) can cause hair loss through skin irritation and inflammation.
• Infections: Fungal infections (ringworm) and bacterial infections can lead to hair loss and skin problems.
• Poor nutrition: A deficiency in essential nutrients, such as vitamins and minerals, can hinder hair growth and lead to hair loss.

Parasites

• Fleas: Flea bites can cause intense itching and hair loss.
• Ticks: Ticks can cause skin irritation and hair loss.
• Mites (e.g. scabies): Scabies mites burrow into the skin, causing severe itching and hair loss.

Infections

• Fungal infections: Ringworm and other fungal infections can cause bald patches and flaky skin.
• Bacterial infections: Bacterial skin infections can lead to hair loss and inflammation.

Poor Nutrition

• Vitamin and mineral deficiencies: Insufficient intake of essential nutrients can lead to a weak coat and hair loss.

Symptoms and Diagnosis

Hair loss can manifest in various ways, such as:

• Coat changes: Thinning of the coat, bald patches, changes in texture or colour.
• Skin problems: Redness, flaking, bumps, spots or sores.
• Behavioural changes: Excessive scratching, biting or licking of the skin.

To determine the cause of hair loss, your veterinarian will carry out a thorough physical examination and may perform additional tests such as skin and coat biopsies, blood tests and allergy tests.

Diagnostic Methods

• Physical Examination: Inspection of the skin and coat by a veterinarian.
• Skin and Coat Biopsies: Taking samples of skin or hair to determine the cause of hair loss.
• Blood Tests: Analysis of blood samples to identify hormonal or nutritional problems.
• Allergy Tests: Tests to detect food or environmental allergies.

Symptom	Possible Causes
Bald patches	Fungal infections (e.g. ringworm), bacterial infections, parasites (mites, fleas), hormonal imbalance (hypothyroidism, Cushing’s disease)
Excessive scratching or biting	Allergies (food, environmental allergens), parasites (fleas, mites), stress, dry skin
Redness of the skin	Allergies, infections, parasites, skin irritation caused by chemicals
Flaky skin	Food allergies, hormonal problems, fungal infections, deficiencies in essential fatty acids
Thinning coat	Hormonal imbalance, nutritional deficiencies, stress, age
Inflammation and scabbing	Bacterial infections, parasites (mites), allergies
Loss of shine in the coat	Poor nutrition, hormonal imbalance, lack of care
Increased licking in certain areas	Allergies, skin infections, parasites, behavioural problems

Treatment options

The treatment of hair loss in dogs depends on the underlying cause. Possible treatment options include:

• Medical treatments: Anti-parasitic drugs, antifungal and antibacterial agents, hormone therapy.
• Dietary adjustments: Dietary changes, supplements such as omega-3 fatty acids and zinc.
• Home remedies and care: Regular bathing with special shampoos, combing and brushing techniques, avoiding stress and environmental allergens.

Prevention of Hair Loss

Preventive measures can help prevent hair loss in dogs:

• Regular veterinary check-ups: Have your dog checked regularly by the veterinarian to detect any health problems at an early stage.
• Healthy diet and good nutrition: Ensure a balanced diet that contains all essential nutrients.
• Regular care and hygiene: Brush and comb your dog regularly, keep the skin clean and dry, and check for parasites.
• Parasite prevention: Use flea and tick treatments as recommended by your veterinarian.
• Stress management and sufficient exercise: Ensure sufficient exercise and mental stimulation to reduce stress.

Dog Care Checklist: Preventing Hair Loss

Daily Care

• Check for Parasites: Inspect your dog’s coat daily for signs of fleas, ticks and mites.
• Combing and Brushing: Brush your dog’s coat daily or as recommended for the specific breed to remove loose hairs and prevent tangles.

Weekly Care

• Inspect the Skin: Check your dog’s skin for redness, flaking or other signs of irritation.
• Bath: Give your dog a bath using a suitable dog shampoo, especially if they are visibly dirty or have a specific skin condition. Use medicated shampoos if recommended by your veterinarian.

Monthly Care

• Prevent Parasites: Use monthly preventive treatments for fleas and ticks as recommended by your veterinarian.
• Nail Care: Trim your dog’s nails to prevent discomfort and potential injury.

Seasonal Care

• Coat Care During Shedding Season: Increase the frequency of brushing during the shedding season to remove excess hair.
• Humidity in Winter: Ensure adequate humidity in the home to prevent dry skin, especially during the colder months.

Nutrition and Hydration

• Balanced Nutrition: Ensure a high-quality, balanced diet that contains all essential nutrients. Consult your veterinarian for nutrition advice.
• Hydration: Ensure your dog always has access to fresh, clean drinking water.

Prevention and Healthcare

• Regular Vet Visits: Schedule regular check-ups with the veterinarian to monitor your dog’s overall health and identify early signs of any issues.
• Vaccinations and Deworming: Keep your dog’s vaccinations and deworming treatments up to date.
• Allergy Management: Identify and avoid allergens that may cause skin irritations and hair loss. Consult your veterinarian about allergy testing if necessary.

Stress Management and Activity

• Stress Reduction: Create a calm and safe environment for your dog to minimise stress.
• Regular Exercise: Ensure sufficient physical activity and mental stimulation to promote your dog’s health.

Hygiene and Environment

• Clean and Comfortable Bed: Wash your dog’s bedding and toys regularly to keep the environment clean and hygienic.
• Avoid Harsh Chemicals: Use mild cleaning products in the home to prevent skin irritation.

When to See the Veterinarian?

Consult your veterinarian if you notice any of the following symptoms:

• Excessive hair loss: If your dog is losing more hair than usual or if bald patches appear.
• Skin infections or inflammation: Redness, swelling, spots, sores or other signs of skin irritation.
• Lethargy or other behavioural changes: If your dog is listless, has a reduced appetite or is behaving differently than usual.

Early diagnosis and treatment are crucial to safeguarding your dog’s health and reducing discomfort.

Conclusion

Hair loss in dogs can be a sign of various underlying health issues. By understanding the causes, symptoms and treatment options, you can provide your dog with the best care. Be vigilant, observe your dog regularly and consult your veterinarian if in doubt or if there are severe symptoms.

FAQ

What are the most common causes of hair loss in dogs?

Hair loss in dogs can be caused by allergies, parasites such as fleas and ticks, hormonal imbalances such as hypothyroidism and Cushing’s disease, and poor nutrition.

How can I prevent hair loss in my dog?

You can prevent hair loss through regular care and hygiene, a healthy diet containing all essential nutrients, parasite prevention, and regular check-ups with your vet.

What are the symptoms of an underlying problem causing hair loss?

Symptoms of underlying problems may include: bald patches, redness, flaky skin, excessive scratching or biting, and behavioural changes such as irritability and a reduced appetite.

When should I take my dog to the veterinarian for hair loss?

Consult your veterinarian if your dog is experiencing excessive hair loss, developing bald patches, showing signs of skin infections or inflammation, or exhibiting changes in behaviour and appetite.

Can skin health supplements help reduce hair loss?

Yes, our skin health supplements can help reduce hair loss by supporting skin and coat health with essential nutrients such as omega-3 fatty acids and zinc.