Rosacea is a chronic condition characterized by facial erythema (redness) and sometimes pimples.
Rosacea affects both sexes, but is almost three times more common in women. It has a peak age of onset between 30 and 60.
Rosacea typically begins as redness on the central face across the cheeks, nose, or forehead, but can also less commonly affect the neck, chest, ears, and scalp.
Because sunlight is a common trigger, avoiding excessive exposure to sun is widely recommended. Some people with rosacea benefit from daily use of a sunscreen; others opt for wearing hats with broad brims.