A varicose vein is an enlarged, twisted superficial vein. They can occur in almost any part of the body, but mostly seen in the lower leg area. It is caused by incompetent venous valves (valves that do not work well and have a hard time moving the blood back towards the heart).
When this happens the blood pools and the veins swell. This can cause pain in the feet, ankles and legs, swelling, and ulcers on the skin Varicose veins can be acquired or congenital. They can be caused or aggravated by pregnancy, obesity, and prolonged periods of standing (working in a position that requires you to be on your feet for great lengths of time).
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