When these valves stop working, the blood has difficulty moving upward. Consequently, blood pools in the veins where the valves no longer are functioning. These engorged veins are varicose veins. Factors that may contribute to this condition are pregnancy, constipation, excess weight, standing on your feet for long periods of time, and wearing tight clothing. The condition tends to run in families.
Many people require only elastic stockings for support during daily activities.
Regular walking, standing only when necessary, and elevating your feet as often as possible may keep your varicose veins from getting worse. One treatment available, called sclerotherapy, involves injecting an irritating liquid into the veins. This causes the smaller varicose veins to close and forces the blood to flow through healthier veins. A surgeon may need to remove a large vein in some cases. Usually sclerotherapy or surgical treatment give permanent results in the veins treated.