Hair loss in dogs, or shedding, is a natural physiological process that can occur throughout the year, although the most intense periods usually occur in spring and autumn. This phenomenon, influenced by hormonal, environmental and genetic factors, raises many questions: what are the exact causes? Are there effective solutions to limit its extent? Does regular brushing play a determining role? How often should it be done to maintain the health of the coat? Are certain breeds less prone to hair loss?
Abnormal Causes of Hair Loss
Shedding is a normal physiological process in dogs. However, excessive or localized hair loss should be given special attention and warrants veterinary consultation. Alopecia, defined as abnormal hair loss, may be a symptom of an underlying dysfunction affecting the animal's health. It may manifest itself locally on certain body regions or extend to the entire coat.
Different etiologies can be at the origin of this anomaly, whether they are pathological, environmental or nutritional. Common causes include dermatological conditions (allergic dermatitis, bacterial or fungal infections), hormonal imbalances (hypothyroidism, hypercorticism), as well as certain nutritional deficiencies. Similarly, parasitic factors (infestation by fleas, mites or fungi) and psychogenic disorders (stress, anxiety) can contribute to abnormal hair loss.