Common disease that affects about 10% of dogs, close to eczema in humans. Atopic dermatitis is a chronic inflammation of the skin, of genetic origin. It appears in dogs generally before the age of 3 years.
Atopic dermatitis evolves over time but persists throughout the life of the dog. A dog with canine atopic dermatitis may have one or more of these signs:
Atopic dermatitis evolves by outbreaks, with periods of crises and periods of lull.
A kin barrier disorder:
The superficial part of the skin behaves like a protective brick wall. The bricks are cells and the mortar is composed of lipids that provide good impermeability. This prevents dehydration and the penetration of external agents.
The skin does not play its protective role: it allows the evaporation of too much water, which is responsible for skin dryness. It allows allergens and microbes to enter more easily, which is responsible for inflammatory reactions.
*Allergen: substance capable of triggering an allergic reaction