Varicose veins are generally categorized into grade 0 to grade 6 according to the degree of varicose veins and symptomatic manifestations, and conservative or surgical treatments are chosen according to the degree of varicose veins. Grade 0 is generally without any sensation or symptoms. Grade 1 varicose veins are characterized by dilated capillaries and localized flushing of the skin. Grade 2 varicose veins protrude from the skin and some people may experience discomfort. Grade 3 can cause edema or skin changes. Grade IV not only causes some skin changes, but also some hyperpigmentation. Grade V mainly causes localized ulcers mainly due to poor local microcirculation caused by varicose veins. Grade VI is a localized ulcer which does not heal easily. Clinically, varicose veins below grade III can be treated conservatively by reducing the standing time or by wearing varicose vein compression stockings; at grade III or above, surgical treatment is required. The main surgical methods are traditional phlebotomy or interventional treatment. If you suspect that you have varicose veins, it is important to go to the hospital and have a professional doctor determine if you have varicose veins and how to treat them.