👉 Banner veins, also known as superficial palmar or dorsal digital veins, are superficial veins that run along the palms and backs of fingers and toes. They are named for their appearance resembling a banner or a flag, with their namesake being the large veins that run across the back of the hand. These veins are responsible for returning blood from the fingers and toes back to the heart and are usually visible when the skin is stretched or when the hand is flexed. Banner veins are typically thinner and more superficial than deeper veins and are often more prone to varicose veins.