Green veins are most visible on the legs, hands, and arms, though their appearance varies depending on skin tone and fat distribution. The veins themselves can also appear differently depending on the health of the veins. Spider veins are smaller, thinner veins closer to the skin’s surface, forming web-like patterns that are usually cosmetic. A vein screening can identify the cause and treat vein problems in leg before they progress. #s3gt_translate_tooltip_mini { display: none !important; }