Rosacea, or acne rosacea, is a non-contagious skin inflammation that exclusively affects the face. The small surface blood vessels (capillaries) of the skin enlarge, giving the appearance of a permanent flush. The forehead, cheeks and chin may develop yellow-headed pimples. Unlike acne, rosacea does not scar.
The condition first appears between the ages of 30 and 50 years. Frequent flushing or blushing is commonly the first sign. Over time, permanent redness (erythema) may develop as the capillaries enlarge and pustules begin to form. In men, severe rosacea can cause the nose to become reddened and enlarged (rhinophyma).
The symptoms tend to worsen with advancing age. The cause is unknown and there is no permanent cure. Overheating in bed at night may contribute to the development of rosacea.