The group of conditions including Atopic dermatitis and contact dermatitis belongs to which category?

• A. Inflammation
• B. Infestations
• C. Bacterial skin infections
• D. Lesions

Answer: (A)

Inflammation of the skin is the key idea here. Atopic dermatitis and contact dermatitis are both inflammatory skin conditions. Dermatitis means skin inflammation, and these two are classic examples: atopic dermatitis involves chronic immune-driven inflammation with barrier dysfunction, while contact dermatitis is an inflammatory reaction to an irritant or allergen after exposure. The redness, itching, swelling, and sometimes blisters you see are all manifestations of this inflammatory process. They aren’t infestations (which involve parasites), nor primary bacterial infections (though dermatitis can be complicated by infection), and they aren’t just lesions—their defining feature is the inflammatory response in the skin.