The varicose veins are bigger inflamed veins that appear close to the surface of the skin and are purple or deep blue in color. They are usually unpleasant, and also brought on by malfunctioning blood vessels. Read this: http://www.research.ksu.ac.th/?option=List&type=3&id=28&to=มหาวิทยาลัยราชภัฏทั่วประเทศ& for details.