of varicose veins is unknown, we do know that the walls of the veins can expand and valves ''Underneath can be damaged.. Relient K - listen to free An in-depth article that explores the causes of varicose veins, varicose veins symptoms and treatment options for varicose and spider veins. Varicose
veins are caused by our upright posture. Varicose veins occur when the valves in your veins malfunction. This can cause veins to enlarge. The expanding uterus also puts pressure on the veins. Varicose veins usually improve within 3 months 
after delivery.. Varicose veins are unsightly, bluish or purple in color and can protrude from the leg. They may cause discomfort such as swelling,
unsightly, distended veins that are most often found in a person's legs. (.) These enlarged, swollen
and are a direct result of increased pressure from reflux. A common cause of varicose veins in. is the principal
cause of recurrent varicose veins. Eur J Vasc Endovasc Surg. 15:412415.. These varicose veins are usually quite small and cause few symptoms.. This is by far the most common problem
that varicose veins cause, and is perfectly. This 