Rosacea patients characteristically react with erythema on the central areas of the face, less often the neck, and the V-shaped area of the chest. These individuals are constitutionally predisposed to blushing and flushing, evoked by numerous nonspecific stimuli: ultraviolet radiation, heat, cold, chemical irritants, emotions, alcoholic beverages, hot drinks, spices. It is a mistaken belief that these persons flush when they drink tea and coffee. In fact the specific stimulus is heat. Cold tea and coffee have no effect. Flushing is more intense and lasts longer than in those who tend to blush when embarrassed. Eventually flushing and blushing lead to permanent erythema.