What condition primarily causes redness of the facial skin, especially in blushing areas?

Rosacea is a chronic inflammatory skin condition that primarily affects the facial skin, leading to noticeable redness, especially in areas where blushing typically occurs, such as the cheeks, nose, and forehead. This condition is characterized by a persistent flushing and the visibility of small blood vessels, which can intensify during triggers such as heat, spicy foods, or emotional stress. Over time, individuals may also develop papules and pustules resembling acne.

The specific redness associated with rosacea sets it apart from other skin conditions. While seborrheic dermatitis can cause redness, it is usually accompanied by scaly patches and primarily affects oily areas of the skin like the scalp and face. Urticaria, or hives, presents with raised, itchy welts on the skin rather than persistent redness. Contact dermatitis results from exposure to irritants or allergens, leading to localized inflammation but not specifically the facial redness associated with blushing and rosacea.