How do varicose veins and spider veins form?
Venous insufficiency is the culprit!!!! The one way valves in the leg veins allow blood to slowly make its way back to the heart. When these valves get damaged, the blood begins to leak back down in these veins towards the feet. “Venous insufficiency” or “venous reflux disease” is the medical term describing the downward flow of blood in the dilated veins with damaged valves.
