Indications and non-indications for laser treatment of vascular lesions: Indications: congenital hemangiomas (nevus, hemangioma, etc.), capillary dilation, spider nevus, congested fresh early scarring, etc. Non-indications: lesions with vessels deeper than 1.5mm under the skin, who cannot tolerate surgery. The principle of laser treatment of vascular lesions: Laser treatment of vascular lesions is based on the principle of selective photothermolysis, i.e. the hemoglobin in the lesioned blood vessels selectively absorbs the laser energy and the temperature rises, producing coagulation and vascular destruction without damaging the surrounding normal tissues. Vbeam treatment of vascular lesions is only mildly painful: the dynamic cooling device injects a cooling agent before the laser pulse is fired, providing rapid and effective cooling of the epidermis and reducing pain. Laser treatment of vascular lesions does not cause irreversible damage to the body: the laser does not cause damage to normal human tissues or only slightly reversible damage, but irreversible damage to lesions, showing a high degree of selectivity, and generally does not form a scar. The dynamic cooling device effectively protects the epidermis and reduces the possibility of blistering and scarring. The laser has a limited penetration depth, generally reaching only the dermis, without causing damage to deeper tissues. As long as you avoid looking directly at the laser beam, there will be no impact on your vision and the doctor will take certain measures to ensure foolproof treatment when treating around the eyes. Lasers are not rays and do not cause radiation damage to the body. Even sensitive skin rarely has an allergic reaction to the laser. Age of laser treatment for vascular lesions: Laser treatment is suitable for patients of any age. In general, the younger the patient, the thinner the skin, the more superficial the lesion, the smaller the caliber of the blood vessels, the stronger the repair and absorption capacity, the fewer the number of treatments, and the better the treatment results. For younger patients, general anesthesia is often required to cooperate with the treatment, which does not affect intelligence but increases the risk and cost of treatment. At present, treatment of nevus is mostly advocated before the age of 10. The number of laser treatments for vascular lesions: Laser treatment for vascular lesions often requires multiple treatments. The number of times of treatment and the effect of vivid nevus are related to the lesion area, age, color, area and other factors, which are difficult to predict accurately before treatment. Most of the facial capillary dilation and spider nevus can be cured in one session. The interval between each treatment is about 2 months. Reactions and precautions after laser treatment of vascular lesions: Mild local redness and swelling appear after laser treatment. Due to the protection of the dynamic cooling device, blisters rarely appear and mostly no crusts are formed. In general, the treated area does not need to be protected from water, but attention should be paid to sun protection, and there are no special dietary requirements. Complications of laser treatment of vascular lesions: After laser treatment, a few patients may develop purpura and hyperpigmentation, the former disappearing in 1 to 2 weeks and the latter recovering within 6 months. Scar formation is possible with any laser, but Vbeam has not been reported.