Spider veins are tiny purple or red blood vessels located on the surface of the leg. They appear as tiny branching lines that, at times, can resemble a spider's web. 

They can most commonly be found on thighs, calves, ankles, or faces and are often a cosmetic concern. 

The primary treatment for spider veins is a procedure called Sclerotherapy. A liquid "sclerosing" agent is injected into the vein and the purple color fades away. It may take multiple therapies to achieve full results, but there is no recovery time so the patient can proceed with regular activities.