 Don't ignore facial redness or what you might think is a sunburn that just won't go away. It could be an early warning sign of a common facial disorder called rosacea. 16 million Americans have rosacea and its top trigger is the sun. Learn the warning signs, facial redness, bumps and pimples, visible blood vessels, even irritated eyes. If you experience any one of these signs, see a dermatologist for diagnosis and treatment or visit the National Rosacea Society at rosacea.org.