Now many people, including young people, unknowingly appear on the face of the blood, which is the medical term capillary dilation, is very confused, do not know how it is formed. In fact, the red blood on the face is revealed by the poor performance of the local capillary dilation of such people, some people because the facial surface of the stratum corneum damage thinning or thin skin surface so that part of the capillary position superficially exposed, showing a thread of vertical and horizontal, such as spider web-like scattered distribution, the heavier will be connected into a sheet, into a red face. At this time, the skin becomes sensitive due to thinness, and the face becomes more red when stimulated by excessive cold, heat, emotional excitement, or sudden changes in temperature. Severe cases will also form deposition discoloration on the face, in the nose for a long time will thicken the formation of nasal flab-like red nose, also known as rosacea nose. Not only does it affect your appearance, it also leaves a psychological shadow and brings inconvenience to your work and life. What are the reasons for the formation of red blood cells? There are many reasons for the formation of red blood, in addition to a part of the original is congenital genetic, that is, someone in the family has this phenomenon, most of the stimulation of local factors or visceral diseases caused. Such as the following reasons: 1, the impact of geographical and climatic factors: such as plateau climate, high altitude, lack of oxygen to the skin, the increase in the number of local red blood cells, or cold areas stimulated by cold, or frostbite resulting in blood circulation is blocked, the blood vessel wall stagnation; or dry air, or sandy climate, coupled with sun exposure, so that capillary tolerance exceeds the limit, causing capillary dilation rupture. 2, occupational factors: long-term work in high temperatures such as chefs, welders and other facial often subjected to flame baking. In the work of workers outside the long-term strong ultraviolet radiation will damage the keratin layer, causing capillary dilation performance deterioration. 3, improper beauty care: long-term use of high-grade cosmetics so that the skin has been in a nutrient-rich state, or the use of poor-quality cosmetics, the inner surface contains heavy metals or skin care products in the destruction of acid ingredients or containing hormones and other ingredients; or accepted the stratum corneum polishing, photorejuvenation and other skin surface stratum corneum damage; or beauty peeling products containing ” benzoic acid “repeatedly stimulate the thin, delicate facial parts, so that the epidermis becomes thin, under the ultraviolet radiation is easy to make capillary expansion rupture, coupled with skin peeling caused by the fragility of skin immunity, often in the beauty salon to do suction surface care, etc. can also lead to vasodilatation rupture. Local long-term intermittent use of corticosteroid ointment, will also cause capillary dilation, skin thinning, atrophy, etc. 4, personal habits or age relationship: such as like to eat spicy, addicted to tobacco and alcohol, etc., easy to emotional excitement, often stay up late, etc.; older, dry skin or allergies, local lack of oil and moisture nourishment, skin long-term malnutrition, etc. can also appear capillary dilation. 5, the existence of certain diseases such as lupus erythematosus, dermatomyositis, etc., due to poor blood circulation, in the wind and sun or high temperature stimulation, stagnant blood blocking the skin, so that the blood vessels dilate. Together with the lack of vitamins and trace elements in the body directly make the capillary walls lack elasticity, causing dilation. How to treat erythema This is the first step to find the cause and eliminate the irritants that continue to aggravate. Some of the lighter ones can apply Pimecrolimus or Tacrolimus ointment and emollient creams to improve allergy symptoms and help repair the dense protective layer of the epidermis, which can also reduce or disappear some of the more shallow dilated capillaries. Short-term application of tacrolimus ointment or herbal topical application has some effect, but the chance of rebound is more obvious. Of course, the current treatment of choice is still the laser, its principle is to use a specific wavelength to make the endothelial cells or red blood cells absorb a large amount of heat after the destruction, and then the blood vessel damage is absorbed. The lighter ones can be eliminated by means of intense pulsed light (photorejuvenation), and the heavier ones can be eliminated by long pulsed laser or fuel laser a few times, usually once every 3 weeks to a month, and the lighter ones disappear once, while the heavier ones take 4-5 times. There is no special reaction after the laser, the heavier ones have local purple, some blisters, scabs, scabs take a week to absorb or fall off, after the surgery, pay attention to sun protection and avoid contact with water to avoid infection or pigmentation, some people will have a slight itching when recovering, avoid scratching and uncovering the surface scabs by themselves, that may leave shallow scars, this way of treatment some people will have Some people may have hyperpigmentation or shallow scars. After treatment, as long as attention is paid to avoid triggering factors, it will not rebound. There is also photodynamic treatment, which is to apply drugs to the dilated area, and then destroy the endothelial cells of blood vessels by means of light, and then the body absorbs and digests them by itself.