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Spider veins are small superficial blood vessels that appear red or blue in the skin. They commonly occur on the legs, but are also found on the face or other areas of the body. These dilated blood vessels may be short, unconnected lines, each about the size of a large hair, or connected in "sunburst" pattern. They may look like a spider web or a tree with branches. Spider veins can occur in a small area where they are not very noticeable, or they can cover a large area of skin and be very unattractive. Larger dilated blood vessels called varicose veins may be raised above the skin surface. They may occur with spider veins.
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