Varicose veins are not only the bulgy, twisted colorless veins in the lower leg, but also the tiny red, dark purple or bluish-green strips.
The blood circulation starts from the heart, runs through the body in the arteries and returns to the heart through the veins. The veins in the legs are a one-way road, controlling the return of blood to the heart by small valves and using gravity to prevent the return of blood to the foot.