Rosacea is a skin disease that causes redness and swelling of the face. As the disease progresses, small vessels and tiny pimples begin to appear on and around the reddened area. Rosacea is rare in childhood and develops over a long period of time. It may first seem like a tendency to blush easily, a ruddy complexion, or an extreme sensitivity to cosmetics. For some unknown reason, women tend to get rosacea more often than men. In advanced cases, the disease can be characterized by a enlarged red nose and puffy cheeks. Approximately half of all rosacea patients experience burning and grittiness of the eyes—a condition commonly known as conjunctivitis, which should be treated immediately.