Thread veins of the legs are due to underlying "hidden varicose veins" in almost 90% of people. To get the best chance of curing thread veins of the legs, it is essential to have a venous Duplex Ultrasound scan of the legs first, to find out where the thread veins are coming from. Treating the thread veins without a scan first and treating any underlying cause that is found, is likely to lead to failed treatment, wasting time and money. Mark Whiteley of The Whiteley Clinic explains.
