Who doesn’t want to have a clean face, who doesn’t want to be radiant, but what about red birthmarks such as nevus erythematosus on the face? Whether this is the kiss of God or Satan’s mischief, today we will learn some knowledge about red birthmarks. Red birthmarks are usually formed before birth and gradually expand after birth, seriously affecting the patient’s aesthetic appearance. Skin hemangioma is a kind of benign tumor mainly characterized by the proliferation of vascular endothelial cells, mostly seen in children, often found at birth or shortly after birth. More than 50% of hemangiomas grow in the head and face, some are protruding, some are flush with the skin, but hemangiomas may grow in all parts of the body, including limbs, trunk, viscera, brain, etc. In the light case, it affects the appearance, and in the heavy case, it affects the function of the organism. The treatment of hemangioma used to be surgery or isotope treatment, which is difficult to remove completely or leave scars. In recent years, with the wide application of modern laser, it brings new and safe treatment means for hemangioma patients. 595nm or 585nm pulsed dye laser is very effective in treating superficial hemangiomas, nevus and other vascular malformations. Strawberry hemangioma: shaped like strawberry, with clear boundary and not easy to fade away when pressed. It occurs in face, neck and scalp, and usually appears 3~5 weeks after birth. It is a small red spot at the beginning, and grows rapidly later on, with the prolongation of time, part of strawberry hemangioma can subside on its own, but considering that part of hemangiomas can’t subside on its own and we can’t determine which hemangiomas will subside in the early period of time, which makes some of them grow up rapidly, and brings difficulties in the treatment, and if hemangioma is located in the vicinity of important organs, it will cause serious complications. If the hemangioma is located around vital organs, it will cause serious complications. Therefore, the current view is that once a hemangioma is found, it should be treated as early as possible. Strawberry hemangioma can be treated with laser, intense light therapy, local injection of pingyangmycin, surgery, superficial X-ray irradiation and so on, which have better curative effect, and can be used in combination with one or two methods. However, among all the treatment methods, intense pulsed light or laser has the least side effects. Therefore, superficial strawberry hemangioma should be preferred to intense light or laser treatment, Candela company produces Vbeam is the wavelength of 595nm flash lamp pumped pulsed dye laser therapy, mainly used for the treatment of capillary dilatation and benign vascular lesions of the skin. vbeam emits laser light is mainly absorbed by hemoglobin in the dermis, after absorbing the light energy and then converted into light energy. The absorbed light energy is then converted into heat energy, which coagulates the target blood vessel and prevents its regeneration.Vbeam pulse width is moderate and adjustable, which can selectively destroy blood vessels and avoid damaging the surrounding tissues. Nevus flammeus (bright red nevus): commonly known as “red birthmark”, some people have it when they are born, most people start to appear after birth for some time, and the area gradually becomes bigger. It is patchy, not higher than the skin surface, irregular in shape, and partially or completely discolored when pressed. Any part of the body can grow bright red nevus, but it is more common on the face and neck. If it occurs on the face, it will seriously damage the patient’s appearance and frustrate the patient’s self-confidence. Traditional methods of treating nevus with bright red spot include carbon dioxide laser, pulsed dye laser, photodynamic therapy and so on. The traditional carbon dioxide laser is prone to scarring, while photodynamic therapy for nevus erythematosus is still in the clinical trial stage. At present, it is generally believed that 595nm or 585nm pulsed dye laser has the most ideal wavelength for the treatment of nevus of bright red spot, and it is recognized to have good effect, with the best effect on the treatment of facial lesions, a little bit worse on the neck, and worse on the upper lip and legs. The effect of children is higher than that of adults, and the cure rate can be significantly improved if the treatment is started within 1 year of age. Due to the limitations of science and technology, the current treatment of red birthmarks can not reach 100% cure rate, but early detection, early treatment can significantly improve the removal rate of skin lesions, if you find a child with red birthmarks, need to go to the hospital as soon as possible, so as not to leave a lifelong regret.