Vein disease treatment ranges from daily compression stockings to minimally invasive procedures that close damaged veins in under an hour, depending on how far the condition has progressed. Most people with early-stage vein disease respond well to conservative measures, while more advanced cases involving skin changes or ulcers typically need a procedure to seal off the malfunctioning veins and redirect blood flow to healthy ones.
How Vein Disease Is Diagnosed
The standard diagnostic tool is a duplex ultrasound, a painless scan that maps blood flow in your leg veins in real time. The technician looks for “reflux,” which is blood flowing backward through valves that should only allow it to move upward toward the heart. A vein is considered incompetent when blood flows backward for longer than half a second in the superficial system, or longer than one second in the deep veins. That half-second threshold is the widely accepted cutoff that separates normal valve function from a vein that needs attention.
Doctors classify vein disease on a scale from C0 to C6. C0 means no visible signs. C1 covers spider veins and small reticular veins. C2 is varicose veins (3 mm or larger in diameter). C3 adds swelling. C4 involves skin changes like darkening, eczema, or hardening of the tissue around the ankle. C5 is a healed ulcer, and C6 is an active, open ulcer. Your classification determines which treatments are appropriate and whether your insurance is likely to cover a procedure.
Compression Therapy: The First Line of Treatment
Compression stockings are the starting point for nearly every stage of vein disease, and for mild cases they may be the only treatment you need. These graduated stockings apply the most pressure at the ankle and gradually decrease up the leg, helping push blood back toward the heart.
Stockings in the 15 to 20 mmHg range are effective at reducing leg swelling during a normal workday, particularly for people who stand for long hours. For people who sit most of the day, the 20 to 30 mmHg range produces significantly better results, likely because sustained sitting creates constant elevated pressure in the leg veins (around 52 mmHg) that lighter stockings can’t fully counteract. Even light compression in the 10 to 15 mmHg range can prevent swelling and reduce symptoms in people with minimal vein disease.
For the best results, put your stockings on first thing in the morning before swelling starts, and wear them throughout the day. Knee-length stockings work well for most people. Alongside compression, regular walking, leg elevation, weight management, and avoiding prolonged standing or sitting all help reduce symptoms.
Thermal Ablation: Laser and Radiofrequency
When conservative measures aren’t enough, thermal ablation is one of the most common next steps. These procedures use heat to seal a damaged vein shut from the inside. A thin catheter is threaded into the vein through a tiny puncture, guided by ultrasound, and then either laser energy or radiofrequency energy heats the vein wall until it collapses and closes.
Both options are performed under local anesthesia in an office or outpatient setting, typically in under an hour. The key difference is in long-term outcomes and side effects. At five years, radiofrequency ablation maintains an 88.4% vein closure rate, compared to 75% for laser ablation. Radiofrequency also has a higher complication-free rate (89.5% versus 69% for laser), with laser ablation more frequently causing skin discoloration, numbness, and vein inflammation.
The risk of a deep vein blood clot within 30 days of either procedure is about 3.2%, though that rate has been declining in recent years. Laser ablation carries a slightly lower clot risk (2.8% at 30 days) compared to radiofrequency (3.4%).
Medical Adhesive Closure
A newer alternative seals veins using a medical-grade glue instead of heat. A catheter delivers small amounts of adhesive inside the vein, and the glue holds the vein walls together. Blood reroutes to nearby healthy veins, and over time your body absorbs the sealed vein entirely.
The main practical advantage is that you don’t need to wear compression stockings after the procedure, since the glue provides immediate closure without the thermal injury that requires compression to heal. There’s also no need for the numbing fluid injected along the vein during thermal procedures, which means fewer needle sticks. At five years, adhesive closure maintains about a 70.6% vein closure rate, which is lower than radiofrequency but comparable to laser ablation. The complication-free rate sits at 86%.
Sclerotherapy for Smaller Veins
Sclerotherapy involves injecting a solution directly into a vein, causing its walls to stick together and eventually fade. It’s the go-to treatment for spider veins and smaller varicose veins, and it’s often used alongside ablation to clean up remaining visible tributaries after a larger vein has been sealed.
The form of the injection matters. Liquid sclerotherapy is only recommended for spider veins (telangiectasia). For anything larger, including reticular veins, tributary varicose veins, perforating veins, and recurrent varicose veins, foam sclerotherapy is the standard. Foam displaces blood more effectively and maintains better contact with the vein wall, making it more effective in larger vessels. Ultrasound guidance is used for deeper veins that aren’t visible on the surface.
Sclerotherapy sessions are quick, usually 15 to 30 minutes, and you can walk immediately afterward. Multiple sessions are often needed, spaced a few weeks apart, to fully clear a network of problem veins.
What Recovery Looks Like
Recovery from minimally invasive vein procedures is dramatically faster than the traditional surgical approach of vein stripping. After thermal ablation or sclerotherapy, most people take short walks the same day and return to work within a few days. You’ll need to avoid strenuous activities like jogging, weight lifting, and cycling for at least several days, sometimes longer depending on the extent of the procedure.
After thermal ablation, you’ll typically wear compression stockings for one to two weeks to support healing and reduce bruising. After adhesive closure, compression isn’t required. Mild bruising, tenderness along the treated vein, and a sensation of tightness in the leg are all normal and generally resolve within the first couple of weeks.
Your doctor will schedule a follow-up ultrasound, usually within a week, to confirm the treated vein is fully closed and to check for any blood clot complications. Additional sessions of sclerotherapy or phlebectomy (removal of bulging surface veins through tiny punctures) may be done at the same time as your ablation or staged for a later visit.
Choosing the Right Approach
The 2022 clinical practice guidelines from the Society for Vascular Surgery recommend a step-wise approach. Conservative treatment with compression is tried first. When symptoms persist or the disease progresses, procedural intervention targets the underlying source of reflux, usually a malfunctioning saphenous trunk vein, before addressing the visible varicose tributaries branching off it.
For most people with symptomatic varicose veins (C2 and above), thermal or adhesive ablation of the main trunk vein combined with sclerotherapy or phlebectomy of the branches produces the best long-term results. The specific choice between radiofrequency, laser, or adhesive closure depends on your anatomy, your doctor’s experience, and practical considerations like whether you want to avoid wearing compression stockings afterward. All three are well-established, outpatient procedures with high success rates and low complication profiles.