Although China's traditional physiognomy gives some interesting statements about many moles on people's faces, no matter whether those moles are rich or unlucky, if they affect people's appearance, especially for women who love beauty, it is tantamount to giving birth to a time bomb on their faces. So which moles need laser plastic surgery to get rid of? One of the suitability: Ota nevus: Features: Ota nevus is blue, brown, black or mottled patches and spots distributed around the orbit, and in severe cases, it can be brown, blue-brown or blue-black pigment spots on one or both sides. Special note: Family history. Most nevus of OTA occur at birth or shortly after birth. Some patients have a late onset, or occur in adolescence, postpartum or after trauma. Some patients can get sick after 35 years old. But no matter when it grows, its properties are the same, and there is no difference. For patients who have nevus of OTA at birth or shortly after birth, nevus of OTA will fluctuate once when they are 4-5 years old and 12- 14 years old, that is, during this period, nevus of OTA will grow up, or the color will become dark and stable in the future. For patients with nevus of OTA in the future, nevus of OTA usually grows at the age of 4-5 or 12- 14. Of course, some patients later developed nevus OTA. The color of Ota's nevus can change with the seasons, for example, it is darker in summer and lighter in winter, and emotions also have an influence on the color. Treatment: There are three conventional treatments for nevus of OTA: cryotherapy, general laser therapy, surgery (dermabrasion or skin grafting) and so on. Because the lesion is deep (under the epidermis), some treatment methods are not ideal. The birth of high-tech Q-switched laser in 1990s revolutionized the treatment of nevus OTA. The method has strong selectivity, and can eliminate nevus of OTA without leaving scar. Suitable for the second type: characteristics of port wine nevus: also known as wine-like nevus or telangiectasia nevus, it often appears at birth or shortly after birth, mostly unilateral, occasionally bilateral, and sometimes involves mucosa. At the initial stage of injury, there were several reddish, dark red or purplish red spots with irregular and clear boundaries, which were not higher than the skin surface. Visible telangiectasia, partial or complete fading, smooth surface. With the increase of age, the color turns red and purple, and the focus of 65% patients will gradually expand. Before the age of 40, it can thicken and appear nodules, and it is easy to bleed after trauma. Port wine nevus is a flat plaque composed of countless dilated capillaries, which is a congenital capillary malformation. The lesion area increases with the growth of the body and does not fade for life. Special note: nevus flammeus can occur anywhere, but it is more common in the face and neck, mostly unilateral and right. Because the lesion goes deep into the dermis, conventional treatment methods (such as cryotherapy, high frequency electricity, common CO2 laser therapy, isotope therapy, etc.) are difficult to remove. ). Otherwise it's easy to leave scars. Laser pulse therapy: the green laser emitted by the pulse laser specially used for treating port wine nevus can penetrate the epidermis on the lesion and enter the lesion site very smoothly. Hemoglobin in the blood vessels in the diseased area is completely solidified under the action of powerful laser, and these solidified hemoglobin will seal the abnormal blood vessels. As a result, the diseased blood vessels in port wine nevus disappeared and were cured. Because this kind of laser hardly damages the skin, it will not leave scars after treatment and can completely restore the true color of the skin. Results: Different degrees of skin edema, exudation and scab will appear, and a few people can have small blisters within one week and basically disappear after one week (a few patients can have pigmentation, which usually disappears by themselves within a few months without special treatment). Experts remind: Because the damaged blood vessels are three-dimensionally distributed under the skin, each laser treatment can only remove some blood vessels, and a few blood vessels will be reopened after treatment, so the treatment often needs to be carried out in multiple times. The interval between treatments needs more than two months. Suitable for the third type: birthmark characteristics: people commonly call "birthmark" refers to red, cyan, brown or black skin lesions that occur on the face or other parts of the body at birth or shortly after birth, and the surface is smooth. Medically, these "birthmarks" are roughly divided into two categories: vascular diseases and pigmented diseases. Once it happens, it rarely disappears. Type: birthmarks are divided into pigmented and vascular. Pigmented birthmarks also include nevus OTA, coffee spot, Eton nevus, hair follicle nevus, black spot nevus, skin nevus and so on. Most of these birthmarks occur at birth or shortly after birth, and tend to get worse in adolescence, and may also occur in adolescence or pregnancy. Vascular birthmarks include port wine stains and strawberry hemangioma. Most of these birthmarks are red on the face or other parts of the skin at birth or shortly after birth, which can be parallel to the skin or convex on the skin. They grow rapidly in infancy, and then they can gradually stop growing, but they will not disappear by themselves. Only a few patients with strawberry hemangioma can disappear by themselves.