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What is Seasonal Alopecia?

Marlene Garcia
Marlene Garcia

Seasonal alopecia affects animals, usually in winter months, when patches of hair fall out and the skin becomes darkened. The cause of seasonal alopecia is not known, but it might be connected to a lack of sunlight where harsh winters are common. Also called seasonal flank alopecia, the condition occurs more frequently in certain breeds and in regions with scant sunlight.

Season alopecia usually appears on the flanks, the front part of the rear legs, and typically both sides of the animal’s body. The hair might completely fall out, leaving dark, pigmented skin. It can also appear on the nose, ears, and base of the animal’s tail. In some cases, the hair grows back but is discolored.

Dobermans often have seasonal alopecia.
Dobermans often have seasonal alopecia.

Certain breeds of dogs are more prone to seasonal alopecia, including the boxer, bulldog, Airedale, and schnauzer. It is also common in Labradors, Akitas, Scottish terriers, and Doberman pinschers. Seasonal alopecia is diagnosed by skin scrapings. Some veterinarians believe the condition might be hereditary because it can appear in more than one animal from the same litter.

Schnauzers run a higher risk of seasonal alopecia than most other breeds.
Schnauzers run a higher risk of seasonal alopecia than most other breeds.

Animals might lose their hair a single time, or hair loss may be repeated each year in the same area of the body. Usually, the hair grows back once the animal is exposed to sunlight in the spring, but in some animals the hair loss is permanent. Typically, the area affected by the hair loss is not inflamed and does not itch.

Seasonal alopecia does not pose health risk to animals unless linked to symptoms of underlying diseases that causes hair loss. In some animals, injections of melatonin help the hair grow back more rapidly. Mink farmers sometimes use melatonin to promote thick coats during winter months.

Bulldogs are susceptible to seasonal alopecia.
Bulldogs are susceptible to seasonal alopecia.

Excessive shedding could indicate signs of other disorders. Cushing’s disease is a hormonal dysfunction that points to a problem with the animal’s pituitary gland. Hypothyroidism is the most common cause of hair loss in animals; it produces a thin coat and excessive hair loss. Animal diabetes, an immune disease, also provokes abnormal hair loss. A veterinarian can rule out these disorders through blood tests to determine if seasonal alopecia is present.

Frequently Asked Questions

What is Seasonal Alopecia?

Seasonal alopecia, also known as cyclic follicular dysplasia, is a condition typically observed in dogs where they experience hair loss during certain times of the year. This condition is usually temporary and the hair often regrows after a period. It's believed to be related to changes in daylight hours affecting hormone levels that influence hair growth.

Which breeds are most commonly affected by Seasonal Alopecia?

Boxers, Bulldogs, Doberman Pinschers, and Airedale Terriers are among the breeds most commonly affected by Seasonal Alopecia. However, it can occur in any breed. The condition is not fully understood, but these breeds appear to have a genetic predisposition to the condition, according to veterinary research.

What are the symptoms of Seasonal Alopecia?

Symptoms of Seasonal Alopecia include symmetrical hair loss, primarily on the dog's flanks, back, and neck. The skin in the affected area may appear darker and the hair loss is typically not associated with itching or irritation. The onset of symptoms often coincides with autumn or spring, aligning with seasonal changes.

Is Seasonal Alopecia painful or itchy for dogs?

Seasonal Alopecia is generally not painful or itchy for dogs. Unlike other skin conditions that can cause discomfort or irritation, Seasonal Alopecia is primarily a cosmetic issue. However, if the skin appears inflamed or if the dog shows signs of distress, it's important to consult a veterinarian to rule out other causes.

Can Seasonal Alopecia be treated or prevented?

Treatment for Seasonal Alopecia may include melatonin supplements or light therapy to mimic longer daylight hours, as suggested by some veterinarians. These treatments aim to regulate the hormones that influence hair growth. Prevention is challenging since the exact cause is unknown, but maintaining overall health can help support the dog's coat condition.

Does Seasonal Alopecia affect other animals besides dogs?

While Seasonal Alopecia is most commonly reported in dogs, similar conditions can occasionally be seen in other animals, such as cats or horses. However, the term is typically used in reference to dogs, and other species may experience different underlying causes for hair loss that coincide with seasonal changes.

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    • Dobermans often have seasonal alopecia.
      By: doberman
      Dobermans often have seasonal alopecia.
    • Schnauzers run a higher risk of seasonal alopecia than most other breeds.
      By: elen31
      Schnauzers run a higher risk of seasonal alopecia than most other breeds.
    • Bulldogs are susceptible to seasonal alopecia.
      By: adogslifephoto
      Bulldogs are susceptible to seasonal alopecia.