What Is Rosacea? Wondered what Rosacea meaning is? Rosacea is a skin disease that typically appears in few people during their 30s and 40s. It is marked by redness (erythema) of the face, flushing of the skin, and the presence of hard pimples (papules) or pus-filled pimples (pustules), and small visible spider-like veins called telangiectasias. […]