Which type of dermatitis is associated with an allergic response?

Atopic dermatitis is a chronic inflammatory skin condition that is closely linked to an allergic response, often occurring in individuals with a history of allergies or asthma. The condition often manifests as dry, itchy, and inflamed skin, which can be triggered by various allergens, irritants, or environmental factors. The mechanism behind atopic dermatitis involves an overactive immune response to allergens, leading to the characteristic symptoms.

In contrast, contact dermatitis can also involve an allergic component, but it is specifically triggered by direct contact with an irritant or allergen, distinguishing it from atopic dermatitis, which is more systemic and not limited to contact triggers. Seborrheic dermatitis primarily focuses on sebaceous glands, related more to an overproduction of sebum and fungal involvement rather than an allergic response. Nummular dermatitis, characterized by coin-shaped patches, is primarily associated with dry skin issues and not directly linked to allergies.

Thus, atopic dermatitis stands out due to its strong association with allergy and immune system reactions, making it the appropriate choice in this context.