I'm not a doctor, but I think I can answer this fairly easily. Rosacea is a flushing and redness across the forehead, cheeks or nose. It is frequently mistaken for common acne and effects an estimated 45 million people worldwide but mostly affects fair skinned people. Advanced cases of rosacea can lead to rhinophyma (see
rhinophyma pic). For more information, see
wikipedia's rosacea article