Large varicose veins are usually "curable" with surgery for a 10 year interval. Injection treatment alone is not normally able to eliminate large varicose veins. With ultrasound mapping, surgery is now able to "cure" large varicose veins in 95% of patients for at least 5 years. Varicose veins do tend to recur with pregnancy, obesity, other illnesses and with time. Recurrences are often manageable by sclerotherapy. New treatment, yet to be proven in the long term, involves glue occlusion of varicose veins . Smaller “spider veins” (venules) and surface varices recur throughout life and are only manageable by repeated treatment with injections. Injections are usually good at clearing veins for a couple of years at a time.