Spider veins are an extremely common skin condition suffered by millions of people across the globe. Medically referred to as telangiectasias, spider veins typically appear as a group of red, blue, or purplish veins that radiate from a dark central core, rather like that of a spider’s web. However, they can also appear as fine branch-like shapes or as thin, separate lines along the skin. These veins are typically not an essential part of the larger venous system. Spider veins can be caused by a number of factors, including genetics, pregnancy, weight gain, prolonged standing or sitting, or even certain medications.