La alopecia This is undoubtedly a clear sign that something is wrong with our dog. hair loss Localized or generalized can occur for several reasons, from anxiety or stress until certain skin or hormonal diseasesIn any case, it is always a symptom of some health problem (even if sometimes it is mild and temporary), so it is advisable to seek the help of a veterinarian to determine the origin and apply the most appropriate treatment.
Common causes of alopecia in dogs
Canine alopecia can be due to itchy skin problems (the dog scratches and breaks its fur) oa internal alterations in which the hair falls out even though the animal doesn't feel the urge to scratch. Distinguishing between the two types greatly helps the veterinarian narrow down the diagnosis.
External parasites and scabies
First of all, one of the most common reasons for canine alopecia is the attack of parasitesInsects such as fleas, ticks to lice These rashes cause skin irritations, leading to hair loss in certain areas, especially on the back and tail. In some cases, hair loss also appears on the abdomen, torso, and around the eyes and ears, which can lead to misdiagnosis as other skin conditions. The intense itching causes the dog to scratch, bite, or lick itself, breaking the fur and creating bald patches.
However, it is difficult to distinguish this problem from diseases such as scabies and tubwhich also cause alopecia. Sarcoptic mange and demodectic mange produce lesions on the ventral part of the body, elbows, legs, face, and ears, with very intense itching in most cases and often scabs and thickening of the skin. All of this is usually accompanied by redness and, frequently, by bacterial or yeast infections high schools.
Fungal infections, especially the tubThey are another important cause. They often produce rounded bald patcheswith slightly inflamed edges and scaly skin. They are highly contagious among animals and can also be transmitted to people, so it is crucial to consult a veterinarian if you have any concerns.
Allergies and dermatitis
environmental allergies (to pollen, dust mites, fleas, mold) or the food allergies can trigger a Allergic dermatitisAffected dogs often scratch, lick, or bite themselves excessively, which causes hair loss in the affected areas, redness, irritation, and often a bad skin odor due to secondary infection.
ulcers, support calluses and lick dermatitis (acral lick dermatitis) causes the same effect on the skin: the dog focuses on one area, licks it continuously, and ends up developing a thickened, painful, hairless plaque. In some cases, the cause is an underlying skin problem, but in others, it is a behavior problem associated with anxiety or chronic boredom.
Nutrition and hair loss in dogs
An poor diet This problem can also occur. Just as in people, a lack of Vitamins, quality protein y essential fatty acids It affects all aspects of the dog's body, including the hair and skin.
It is essential that we offer you a I think of high quality that provides the animal with all the nutrients it needs. A diet rich in omega 3 and omega 6 fatty acids It helps maintain the skin's barrier function, promoting cell renewal and reduces dryness, itching and flaking when the skin is exposed due to lack of hair.
Nutrients such as the following are also important: biotin (vitamin H), present in many whole grains, which participates in the regeneration of damaged skin cells; the collagen peptideswhich contribute to maintaining the skin's structure, and the Vitamin Ewith antioxidant action that protects cells against oxidative damage. A complete food that includes these components helps to strengthen the natural barrier of the epidermis so that the fur grows stronger and shinier.
Hair loss due to stress and psychological causes
On the other hand, we find the so-called alopecia areata or alopecia associated with StressIt is one of the most difficult to treat because there is often no clear primary skin lesion and the cause is mainly emotionalChronic stress, separation anxiety, sudden changes in routine, moving, lack of physical exercise, or lack of attention from their owners can trigger this type of hair loss.
When a dog experiences stress, nerve cells are released stress hormones such as cortisol, which can negatively affect skin and coat health. In addition, the dog may develop compulsive behaviors. licked or scratchedespecially on legs, flanks and tail, creating hairless areas and even open wounds.
Sometimes the cause of this anxiety lies in previous traumas or in other more complex psychological problems. In these cases, in addition to dermatological treatment, a behavior modification work and, in some dogs, specific medication prescribed by the veterinarian.
Reactions to vaccines, hygiene products and hormones
There are other determining factors. For example, sometimes alopecia occurs as a reaction to certain substances. Vaccineswhich can cause allergies or local infections at the injection site. In these cases, a small hairless area is usually observed around the injection site, which may resolve on its own over time or require treatment if complications arise.
Hair loss may also occur as a result of using some products. unsuitable hygiene productsuch as human shampoos, harsh colognes, or products with strong perfumes. These cosmetics can cause irritation, allergies, or extreme dryness in dogs' skin, with associated itching and hair loss. Always use appropriate products. shampoos specifically for dogs, adapted to their skin and coat type, and respect the bathing frequency recommended by the veterinarian.
El hormonal disorder It is another common cause of hair loss. Diseases such as Hypothyroidism or Cushing's syndrome They disrupt the hair growth cycle and cause symmetrical alopecia, thinner, drier, or discolored skin, weight gain, lethargy, or increased thirst and urination. This explains why many pregnant females or those experiencing hormonal changes also exhibit some hair loss, often physiological, but which should be monitored if it is very pronounced.
hormone-dependent tumorsSuch conditions as Sertoli cell tumors in males can also manifest with alopecia and skin changes. In these cases, early diagnosis and surgery or specific treatment are key.
Veterinary diagnosis and treatment of alopecia
To find out why a dog is losing hair, the veterinarian will need to perform a full examIt is very helpful to explain when the hair loss started, if the animal has itchingIf it licks or scratches itself, if it has undergone any changes in its diet, environment or routines, and if other animals or people in the household have similar symptoms (in the case of contagious diseases such as ringworm or mange).
In addition to a detailed physical examination of the skin and coat, the professional may use dermatological tests (skin scrapings to look for parasites, fungal cultures, cytology), blood test To rule out hormonal diseases or allergies, specific hormone tests and, in some cases, skin biopsiesWith all these tools, the cause of the alopecia is identified and a treatment plan is designed. treatment plan adapted.
Treatment may include antiparasitic (collars, pipettes, tablets), medicated shampoos, antibiotics, antifungals, elimination diets in cases of food allergies, medication to control hormonal diseases and, when necessary, behavioral therapy or medications to reduce anxiety. Good management of eatingExercise and coat hygiene always complement medical therapy.
In any case, if we notice this hair loss in our dog, we should take them to the vet as soon as possible so they can determine the cause of the problem and recommend the appropriate treatment. Acting quickly usually improves the prognosis and helps the dog recover more quickly. people's wellbeing and a healthy and abundant coat.