What are thread veins?
Thread veins are small thin superficial veins that are visible just below the skin surface, which have a red, green, or bluish-purple appearance. They can occur anywhere on the body, but commonly affect the legs and the face. They are also sometimes referred to as ‘spider veins’, or, ‘broken veins’.
What causes thread veins?
Thread veins occur when small blood vessels known as capillaries become dilated in response to the excess pressure caused by the backflow of blood from larger, deeper veins, into smaller veins.