Varicose veins are caused by weakened valves and veins in your legs. Normally, one-way valves in your veins keep blood flowing from your legs up toward your heart. When these valves don't work as they should, blood collects in your legs, and pressure builds up. The veins become weak, large, and twisted.
Current as of: July 14, 2019
Author: Healthwise Staff Medical Review: E. Gregory Thompson MD - Internal Medicine Adam Husney MD - Family Medicine Martin J. Gabica MD - Family Medicine
Medical Review:E. Gregory Thompson MD - Internal Medicine & Adam Husney MD - Family Medicine & Martin J. Gabica MD - Family Medicine