I feel like all the sources I read regarding rosacea mention blushing/flushing as one of the symptoms. However, they are never clear on what distinguishes normal physiological blushing/flushing from rosacea blushing/flushing. I mean, don't most people normally blush/flush to a certain degree after eating spicy food, drinking alcohol, strenuous exercise, or after a particularly embarrassing/stressful event? How long does a typical rosacea blush/flush last? How exactly does the look of a rosacea blush/flush differ from normal physiological blushing/flushing? Could someone please elucidate on this matter?