Common Causes for Hair Loss in Dogs

If you’ve noticed patches of fur missing from your dog’s coat, excessive shedding, or irritated skin, you may be wondering what’s causing their hair loss. Hair loss in dogs, also known as alopecia, can be concerning for pet owners. While some shedding is normal, significant or sudden fur loss often indicates an underlying issue that requires veterinary attention. From allergies and parasites to hormonal imbalances and infections, there are several reasons why your dog might be experiencing hair loss. If your dog is experiencing hair loss, LePar Animal Hospital in Evergreen Park is here to help. Call us today at (708) 423-3200 or book an appointment online to get expert veterinary care for your furry friend.

 

 

Allergies: A Leading Cause of Hair Loss in Dogs

Just like humans, dogs can suffer from allergies to a variety of substances, which can lead to excessive itching, inflammation, and fur loss. Allergies in dogs generally fall into three main categories:

Environmental Allergies

Dogs can be sensitive to pollen, mold, dust mites, and other environmental allergens. Seasonal allergies often cause itching, red skin, and hair loss, especially around the face, ears, and paws. If your dog frequently licks, chews, or scratches certain areas, environmental allergies may be the culprit.

Food Allergies

Food allergies can also contribute to hair loss in dogs. Some dogs are sensitive to common ingredients like beef, chicken, dairy, or grains. When a dog has a food allergy, symptoms may include chronic itching, ear infections, and digestive issues in addition to fur loss.

Flea Allergy Dermatitis

Even a single flea bite can trigger an allergic reaction in some dogs, leading to intense itching and hair loss. Flea allergy dermatitis typically causes hair loss around the tail, lower back, and hind legs. Regular flea prevention is crucial to preventing these reactions. If you suspect your dog’s hair loss is related to allergies, your veterinarian can help determine the underlying cause and recommend appropriate treatments or dietary adjustments.

Parasites That Cause Hair Loss in Dogs

Parasites are tiny pests that can cause intense itching, inflammation, and fur loss, making your dog uncomfortable.

Mites (Mange)

Mange is a skin disease caused by microscopic mites that burrow into the skin and cause extreme irritation. There are two main types of mange:

• Demodectic mange: Often seen in puppies or dogs with weakened immune systems, demodectic mange can cause patchy hair loss, redness, and scaly skin.
• Sarcoptic mange: Also known as scabies, this highly contagious condition causes intense itching, skin crusting, and widespread fur loss.

Fleas and Ticks

Fleas and ticks not only cause itching and irritation but can also lead to secondary skin infections that contribute to fur loss. If left untreated, flea infestations can result in significant bald patches on a dog’s coat. If your dog has unexplained hair loss and excessive scratching, your veterinarian can perform skin tests to check for parasites and recommend the best treatment plan.

Infections That Can Lead to Hair Loss in Dogs

Bacterial and fungal infections can damage your dog’s skin and coat, leading to fur loss. Some infections develop due to underlying conditions, while others occur from exposure to certain pathogens.

Bacterial Skin Infections

Bacterial infections, such as pyoderma, often develop when a dog’s skin is irritated due to allergies, injuries, or moisture buildup. Symptoms include red, inflamed skin, pustules, and hair loss in affected areas.

Fungal Infections (Ringworm)

Despite its name, ringworm is a fungal infection that causes circular bald patches, scaly skin, and inflammation. This highly contagious condition can spread to other pets and humans, making early treatment essential. If your dog has hair loss accompanied by redness, odor, or sores, seek veterinary care to diagnose and treat any underlying infections.

Hormonal Imbalances That Contribute to Hair Loss in Dogs

Hormonal disorders can affect a dog’s coat, leading to excessive shedding and bald patches. Some of the most common hormonal conditions linked to hair loss include:

Hypothyroidism

Hypothyroidism occurs when the thyroid gland doesn’t produce enough hormones, leading to symptoms like weight gain, lethargy, and thinning fur. Dogs with hypothyroidism often develop dry, brittle coats and experience widespread hair loss.

Cushing’s Disease

Cushing’s disease results from an overproduction of cortisol, a stress hormone. Symptoms include hair loss, excessive thirst, panting, and a pot-bellied appearance.

Growth Hormone Deficiencies

Some dogs may experience hair loss due to hormone imbalances that affect normal coat growth. These conditions are typically diagnosed through blood tests and require veterinary management. If you suspect your dog has a hormonal imbalance, your vet can perform diagnostic tests and develop a treatment plan to manage the condition effectively.

Stress and Anxiety: An Overlooked Cause of Hair Loss in Dogs

Stress and anxiety can have a significant impact on a dog’s overall health, including their skin and coat. Dogs experiencing chronic stress may engage in excessive licking, chewing, or scratching, leading to bald patches and skin irritation. Common stress triggers include:

• Changes in routine
• Separation anxiety
• New pets
• Loud noises

Providing mental enrichment, maintaining a stable routine, and seeking veterinary guidance can help reduce anxiety-related hair loss in dogs.

Should You Seek Veterinary Care for Hair Loss in Dogs?

While some hair loss in dogs is normal, excessive shedding, bald patches, or irritated skin often indicate an underlying health issue. If your dog is experiencing unexplained fur loss, persistent scratching, or other concerning symptoms, it’s important to seek veterinary care as soon as possible. Early diagnosis and treatment can help prevent complications and keep your pet comfortable. At LePar Animal Hospital in Evergreen Park, our veterinary team is dedicated to diagnosing and treating the causes of hair loss in dogs. Call us today at (708) 423-3200 or book an appointment online to ensure your dog receives the best possible care.