1, psychological factors: introverted personality will be easy to blush because of nervousness, low self-esteem, etc. You can often take a deep breath to relax, while strengthening self-confidence, exercise the ability to speak in public, to overcome the inferiority complex; 2, skin sensitivity: thin keratin layer will appear under external stimulation Erythroderma, usually avoid hot water, avoid ultraviolet radiation and the use of irritating skin care products, the use of cool towels cold compresses; 3, rosacea: due to neurovascular dysfunction, patients appear in the middle of the face, such as the nose, cheeks, eyebrows between the symmetrical distribution of red spots, and when eating spicy food or hot drinks, emotional impulse, facial flushing and congestion, self-conscious burning symptoms. Dermatoscopy and histopathological examination should be performed to confirm the diagnosis. The patient should have a thyroid function test and ultrasound examination to confirm the diagnosis.