This leads to gradual enlargement of the veins causing varicose veins. Spider veins are extremely small vessels that become larger and visible, usually on the leg, when small feeder blood vessels ...

Sclerotherapy is the most common procedure for varicose veins. It treats both spider veins and small varicose veins. During the procedure, a chemical is injected into different areas of the veins ...

What happens in our body that make our veins look blue, although they are full of red blood? Follow Tech Insider: On Facebook Following is a transcript of the video: If our blood is red ...

It's called deep vein thrombosis, or DVT. All our veins have small valves powered by the muscles around them. They keep blood moving toward the heart, instead of flowing backward inside veins.

The vein is damaged in the section where it joins the superficial and deep veins in the knee or groin. If you have both small and large varicose veins, you may have more than one type of treatment.