6. Flushing
Flushing occurs when your face suddenly goes red in a particular area. This might be due to exercise, cold weather, stress, or embarrassment. Actually, people who blush more often are also more inclined toward rosacea.
Flushing can be an indication that you have this condition then and is also useful for differentiating the problem from acne. In acne, the redness is likely to be constant, whereas in rosacea you may find that it comes and goes depending on various outside factors.