Which condition presents as a chronic rash with redness and visible blood vessels on the face?

Rosacea is a chronic skin condition that typically affects the face and is characterized by persistent redness, visible blood vessels (telangiectasia), and sometimes the formation of papules or pustules. The rash associated with rosacea can vary in severity and is often accompanied by flushing, which can be triggered by factors such as temperature changes, certain foods, or stress.

Unlike acne, which primarily involves clogged pores and may present with inflammatory lesions, or eczema and contact dermatitis, which are more related to allergens or irritants and can involve different areas of the body or have different appearances, rosacea specifically features facial redness and vascular changes. This makes it distinct and helps in diagnosing and understanding the treatment options available for those suffering from the condition.