Spider veins are small-dilated veins near the surface of the skin and measure about 0.3 to 1.5 millimeters in size. They may be red, blue, purplish, or greenish in color. The medical term for spider veins is telangiectasia. Spider veins can develop anywhere on the body, but are commonly found on the face and legs. There are larger superficial veins called reticular veins that may be the source of spider veins.

Spider veins may be the sign of deeper insufficiency. For this reason, any underlying problem contributing to spider veins must be addressed before treatment may begin. Doctors commonly perform an ultrasound procedure as part of the initial examination. Most spider veins are caused by venous hypertension, which is high pressure in one portion of your venous system.

Reticular Veins

The most common pattern of spider veins is located on the lateral aspect of the thigh.

Spider veins in this location are related to high pressure in the lateral reticular vein.

Treatment must not only be directed at the spider veins, but at the underlying reticular veins as well.

Read more:
Spider Vein Treatment Options

Ron Bush, MD, FACS
Peggy Bush, APN, CNS, MSN