Rosacea is a common skin condition of unknown cause, but it could be due to some combination of hereditary and environmental factors. Rosacea causes redness in your face and often produces small, red, pus-filled bumps. Over time, the redness may become more intense and small blood vessels may become visible. Rosacea can cause the nose to take on a bulbous, swollen appearance called rhinophyma. A number of factors can trigger or aggravate rosacea such as sunlight, hot baths, alcohol, hot foods or beverages, spicy foods, temperature extremes, stress and strenuous exercise. If left untreated, rosacea tends to worsen over time. Treatment methods vary because the signs and symptoms of rosacea vary from person to person. Treatments range from topical preparations, to oral medications or laser treatments.