Varicose veins can be an unattractive and uncomfortable problem. Caused by engorgement of veins near the skin, usually in legs and extremities, these veins can cause pain, itching, and heaviness in the legs. In addition, over time they can lead to swelling in the extremities as fluid is unable to be removed. There are a few medical treatments for this problem, including painful laser ablation. However, this often works only temporarily.