LASER mediated sclerotization is not very painful. The intervention can be practiced in fact under local anaesthesia (except for the smaller patients). Another advantage concerns the characteristics of the immediate post-operative. Swelling and pain are usually negligible and resolve after about ten days after treatment. There are several types of LASER that can be used in a similar way. My experience is based on the use of LASER diodes, but good effectiveness is demonstrated for example also through the use of LASER neodymium. The technique that I use every day involves the use of a LASER diode, whose fiber is inserted directly into the venous lesion. At the end of the fiber there is a light source, which is visible from the outside of the lesion through transillumination, allowing to constantly monitor the position of the fiber inside the lesion and therefore to direct it to the best. The LASER acts from within the lesion causing, through a thermal effect, intravascular coagulation and consequent sclerotization of the lesion.