Doctors say there's no anesthesia and patients experience no pain or painful recovery after the treatment.
"Typically, patients feel better right away almost," says Dr. Mark Adelman of New York University, "as they walk out they feel lighter that they no longer have that heavy pressure inside the veins."
Doctors say a varicose vein is a ballooning out or expansion of a vein. Symptoms include engorgement, swelling, fatigue and heaviness.
Doctors also say it's the same sensation you would get putting a blood pressure cuff on your arm.
Nearly 20 million Americans suffer from varicose veins.