This video has an excellent graphical representation of the cause of varicose veins. The graphics show what normal working veins should look like, including the direction and flow of blood. Damaged vein valves cause veinus reflux which can lead to multiple problems including varicose veins. The damaged valves cause a greater lack of circulationAlthough varicosities can occur anywhere in the body, it is most common in the legs where blood can pool. If circulation is poor, it is generally worst in the legs.

Varicose veins can result in swelling, discoloration, and a twisted pattern of veins all visible on the surface of the affected area. While it is only uncomfortable for some sufferers, varicose veins are expected to get worse over time. If left untreated varicosities can cause complications.

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