Spider veins are red and purple blood vessels that occur in patches. The network of vessels is often as delicate as a spider’s web, which is how they get their name, but they can also resemble tiny sunbursts, branching trees or they may be distributed in a linear fashion on the surface of the skin.
Spider veins (referred to medically as telangectasias) and varicose veins are not the same and one does not lead to the other. Whereas varicose veins are large, swollen and occur singularly on the legs, spider veins are delicate and tend to develop in clusters. They are, however, caused by similar factors. Spider veins appear to be hormonally induced and often are associated with pregnancy and menstruation. Although these spider veins do not produce symptoms, the feeder veins deeper in the skin may cause discomfort. Spider veins occur mostly in women, although they are also seen in men.
Spider veins usually take on one of three basic patterns. They may appear as thin separate lines, tiny branch-like shapes or a true spider web shape with a central point.
Typically spider veins cause aching discomfort, a heavy feeling, and legs that tire easily, with symptoms often worsening as the day continues. Relief comes with walking or elevating the legs. And yet, there are many that experience no symptoms at all.