Seasonal Flank Alopecia, also known as Seasonal Flank Hair Loss, is a skin condition that affects dogs, primarily during specific times of the year. It is more common in certain breeds, such as Boxers, Airedales, Bulldogs, and Schnauzers, but can also occur in other species. The condition typically manifests as symmetrical hair loss on both sides of a dog's flanks (sides) and is often more noticeable during the fall and winter months. The exact cause of Seasonal Flank Alopecia is not fully understood, but it can be related to changes in daylight hours and melatonin levels. During the autumn and winter, the decrease in daylight exposure may disrupt the dog's normal hair growth cycle, leading to hair loss. The condition usually resolves when daylight increases again in spring and summer. The affected areas of hair loss might have some mild redness or scaling, but the skin is generally not inflamed or itchy. Treatment is not always necessary since the dog's general health is not affected, and the hair usually regrows when the condition subsides. Suppose you notice unusual hair loss or other skin issues in your dog. In that case, it is essential to have them evaluated by a veterinarian to rule out other potential causes and ensure an accurate diagnosis.