Sclerotherapy: Sclerotherapy involves injecting a chemical Remedy (known as a sclerosant) into the defective veins by means of a needle or catheter to trigger their closure. It's not necessarily as efficient for veins greater than 5mm in diameter which is predominantly utilised to deal with the more compact extra tortuous https://www.sgvascularctr.com/what-are-some-common-vein-treatments/