What skin condition arises from inflammation of the sebaceous glands and is characterized by scaling and itchiness?

Seborrheic dermatitis is the skin condition characterized by inflammation of the sebaceous glands, leading to scaling and itchiness. This condition often manifests with red, flaky patches and is commonly found on areas of the face, scalp, and upper body where sebaceous glands are more active. The inflammation can cause the skin to produce excess oil, contributing to the formation of thick, greasy scales that can become itchy.

Understanding seborrheic dermatitis as related to sebaceous glands highlights why it differs from other options. For instance, psoriasis primarily involves rapid skin cell turnover, leading to thick, silvery scales that aren't specifically associated with the sebaceous glands. Atopic dermatitis, another inflammatory skin condition, typically stems from genetic and environmental factors and often presents as very dry, itchy skin but does not specifically involve sebaceous glands. Rosacea is a chronic condition characterized by facial redness and visible blood vessels, primarily affecting the blood vessels in the face rather than resulting from sebaceous gland inflammation. Therefore, seborrheic dermatitis distinctly aligns with the symptoms described, solidifying its role as the correct answer.