Varicose veins are a common condition in which veins become enlarged and twisted, typically appearing just below the skin's surface, mainly in the legs. This occurs when the valves in the veins become weak or fail, causing blood to flow backward and collect in the veins.

Unlike regular veins that efficiently return blood to the heart, varicose veins struggle with this task, leading to discomfort, swelling, and visible bulging. While varicose veins themselves may not always indicate a serious health issue, understanding their nature and potential impact is essential for managing symptoms and seeking appropriate treatment.