Dealing with unsightly and painful veins can be a very sensitive matter Varicose veins are the swollen, enlarged veins that appear close to the surface of the skin. They are usually dark blue or purple in color. Any vein can become varicose, but most commonly affected veins are those found in the legs and feet because standing and walking upright increases pressure in the veins of the lower body which causes malfunction of the veins and results in varicose veins. in Public bookmarkswith varicose-veins-treatment-bay-areaby 15 users