Rosacea is a chronic skin condition that primarily affects the face, causing redness, flushing, visible blood vessels, and sometimes the development of small, red, pus-filled bumps. The exact cause of rosacea is not fully understood, but there are several factors that are believed to contribute to its development, such as genetics, abnormalities in blood vessels, Demodex Mites, Immune System Dysfunction, and Environment Triggers.