Rosacea is a common, acne like skin condition of adults, with a worldwide distribution. Rosacea is estimated to affect at least 16 million people in the United States alone and approximately 45 million worldwide. Most people with rosacea are Caucasian and have fair skin.

The main symptoms of rosacea include red or pink facial skin, small dilated blood vessels, small red bumps sometimes containing pus, cysts, and pink or irritated eyes. Many people who have rosacea may just assume they have very sensitive skin that blushes or flushes easily.