Rosacea is a chronic skin disease that causes redness and swelling on the face. The scalp, neck, ears, chest, back and eyes may also be affected. Symptoms range from red pimples, lines and visible blood vessels to dry or burning skin and a tendency to flush easily. Many people find that the emotional effects of rosacea—such as low self-confidence and avoidance of social situations—are more difficult to handle than the physical ones.