What condition is characterized by redness and flushing, especially on the cheeks and nose?

The condition characterized by redness and flushing, particularly on the cheeks and nose, is rosacea. This chronic skin disorder typically presents with persistent facial redness, visible blood vessels, and may also include flushing episodes triggered by factors such as temperature changes, spicy food, or stress. Unlike acne, which primarily involves the presence of pimples and cysts, rosacea does not generally involve the formation of comedones (blackheads and whiteheads).

Eczema primarily causes inflamed, itchy patches of skin often associated with dry skin and can appear anywhere on the body, making it distinct from the localized redness associated with rosacea. Pseudofolliculitis, often referred to as "shaving bumps," occurs due to ingrown hairs and presents as irritated bumps rather than the flushing and redness characteristic of rosacea.

Therefore, the defining features of rosacea, including the specific areas of redness and flushing, clearly identify it as the correct answer in this question.