Varicose veins are swollen, twisted, and enlarged veins that commonly appear on the legs and feet. They occur when the valves within the veins that help regulate blood flow become weakened or damaged, causing blood to pool in the veins instead of flowing smoothly back to the heart. This can cause the veins to bulge and twist, resulting in a lumpy and bumpy appearance. Varicose veins can cause discomfort, pain, and swelling in the affected area, especially after standing or sitting for long periods. In some cases, they may also lead to skin ulcers or blood clots. While they can...