The presence of varicose veins under the tongue indicates a problem with the sublingual veins themselves, or a problem with the venous return, which in most cases is a problem with the veins themselves, as the weakness of the vein walls and the increased pressure in the veins can stagnate the blood in the veins, which over time can lead to dilated and tortuous veins, and the patient will have the corresponding clinical manifestations. This condition requires treatment of the vessels themselves, which can completely solve the problem of subungual varicose veins, either in an open way or in a minimally invasive way. Minimally invasive methods are widely used in clinical practice, such as the injection of sclerosing agents into the varicose veins, which allow the varicose veins to be completely occluded by chemical ablation, eliminating the patient’s clinical manifestations.