Which of the following age groups is most commonly affected by eczema?

A.Atopic dermatitis is a chronic condition often associated with genetic factors, immune dysfunction, and hypersensitivity. It typically presents in individuals with a history of allergies, asthma, or hay fever.

B.Contact dermatitis occurs due to direct exposure to environmental irritants or allergens, such as soaps, detergents, chemicals, or plants like poison ivy. It can be classified into irritant contact dermatitis and allergic contact dermatitis.

C.Nummular eczema presents as coin-shaped lesions on the skin and is often associated with dry skin or allergens but is not directly linked to environmental irritants.

D.Seborrheic dermatitis affects areas rich in sebaceous glands, such as the scalp, face, and chest. It is thought to be linked to overgrowth of yeast (e.g., Malassezia) and is influenced by factors like stress and hormones.

Explanation: The term "dermatitis" is often used interchangeably with eczema to describe a group of skin conditions characterized by inflammation and irritation.

Incorrect choices: a. Psoriasis is a different skin condition characterized by red, raised, and scaly patches.

b. Acne is a skin condition characterized by clogged pores and pimples, not related to eczema.

d. Rosacea is a skin condition causing redness and visible blood vessels on the face, not related to eczema.