WHAT IT IS: Facial veins, also known as spider veins, telangiectasias, spider angiomas, and benign vascular lesions, are actually dilated blood vessels. They are usually found on the forehead, nose, cheeks, eyelids, neck, and upper chest. Blood vessel dilation is due to weakening of the elastic fibers in the walls of the blood vessel. Although the exact mechanisms leading to blood vessel dilation are not understood, visible veins are associated with excessive sun exposure, normal aging, steroid use, liver disease, genetics, radiation therapy, and trauma. On the face, visible veins can be fine-the diameter of a hair shaft or larger and darker blue color.