http://www.niams.nih.gov/Health_Info/Rosacea/default.asp
National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health
Rosacea, previously called acne rosacea, is a chronic skin disease that affects both the skin and the eyes. The disorder is characterized by redness, bumps, pimples, and, in advanced stages, thickened skin on the nose. Rosacea usually occurs on the face, although the neck and upper chest are also sometimes involved. A mild degree of eye (ocular) involvement occurs in more than 50 percent of people with rosacea.