Gravity is the culprit. The distance from the feet to the heart is the furthest blood has to travel in the body. Consequently, if the vein valves fail, those vessels experience a great deal of pressure. The backflow of blood causes the surface veins to become swollen and distorted.
Why do varicose veins occur in the legs?
About the Author: Dr. Daniel Monahan
Daniel L. Monahan, M.D. opened Vein Surgery and Treatment Center of Northern California in 2001. The name changed to Monahan Vein Clinic in 2011. He is board-certified in surgery and a fellow of the American College of Surgeons. Treating vein disease is not something to learn in a weekend course. Dr. Monahan’s formal training included more experience in vein treatment than typical surgical training, and he carried this expertise into his practice.