When stubborn veins start to interfere with life

Many people ignore varicose or spider veins until they start causing discomfort, swelling, or aesthetic concerns. But the truth is, the earlier you treat problematic veins, the better your chances of long-term relief—with fewer complications. At Always For You Medical Center in Gwangjin-gu, Seoul, we often guide patients through a decision between two minimally invasive options: Endovenous Laser Ablation (EVLA) and Sclerotherapy. Both are excellent treatments—but which one works best depends on the vein type, size, and severity of the underlying condition.

Understanding Endovenous Laser Ablation (EVLA)

EVLA is a modern, ultrasound-guided treatment for larger varicose veins, particularly those with faulty valves deep within the leg. A fine laser fiber is inserted into the affected vein, where targeted heat energy closes the vein wall. Over time, the body naturally reabsorbs the sealed vein, rerouting blood flow through healthier vessels.

This method:

• Requires only local anesthesia

• Leaves no visible scars or large incisions

• Offers high success rates—often above 95% for larger veins

• Involves minimal downtime—many patients return to work the same or next day

At Always For You, EVLA is often recommended for patients with great or small saphenous vein reflux, especially when symptoms like heaviness, aching, or swelling are present.

EVLA also addresses the root cause of many visible varicose veins: chronic venous insufficiency. When valves in deeper veins fail, blood pools backward, causing pressure and enlargement of surface veins. By sealing these deeper refluxing veins, EVLA relieves pressure at the source.

The procedure typically takes 30–45 minutes per leg and is performed in our dedicated treatment suites. We use ultrasound throughout to ensure accuracy and safety. Following EVLA, patients walk out with compression stockings and instructions to stay active.

What is Sclerotherapy?

Sclerotherapy is a chemical-based injection treatment, most effective for smaller veins—especially spider veins and reticular veins close to the skin’s surface. A fine needle delivers a solution directly into the vein, causing irritation that leads to its collapse and gradual absorption by the body.

This option:

• Works best on cosmetic or minor veins

• Typically takes 15–30 minutes per session

• May require multiple sessions spaced over a few weeks

• Has minimal recovery time—patients walk immediately afterward

Sclerotherapy can be performed with either liquid or foam sclerosants. Foam allows for better displacement of blood and more even distribution along the vein wall, improving contact and effectiveness. At Always For You, we select the solution type based on vein size and depth.

This treatment is especially valuable after EVLA or surgery to "clean up" remaining superficial veins. It’s also commonly chosen by patients who want to improve the appearance of their legs, particularly during warmer seasons.

While sclerotherapy is generally very safe, some patients may experience temporary skin pigmentation, matting (small clusters of red vessels), or mild inflammation at the injection site. These are typically self-resolving.

Comparing the Two: What We Know from Practice and Studies

Effectiveness

Studies consistently show EVLA as the more effective option for larger veins, especially those with valve incompetence. Its closure rate often exceeds 90% and tends to stay effective even years after treatment. Sclerotherapy, while also effective, has slightly lower closure rates in major veins and is more prone to needing touch-up sessions.

In clinical practice, we find that patients treated with EVLA report faster symptom relief and longer intervals before recurrence. This is particularly true in patients with more advanced vein disease, such as CEAP classification C3 and above (those with edema, skin changes, or healed ulcers).

Sclerotherapy shines when used strategically. It excels in addressing small veins that are not causing major circulation problems but are visually bothersome. It also plays a key role in maintenance care after EVLA, keeping new or residual veins from becoming prominent.

Comfort and Recovery

Both treatments are generally well-tolerated. EVLA may cause mild tightness or bruising for a few days post-treatment, while sclerotherapy can lead to temporary redness, swelling, or skin pigmentation changes. In both cases, compression stockings and walking are encouraged immediately afterward.

Most patients undergoing EVLA at Always For You report only minor discomfort, often describing it as a pulling sensation or tightness along the treated vein. Discomfort usually resolves within one week. Sclerotherapy side effects are even milder, with many patients resuming errands or work the same day.

Long-Term Outcomes

EVLA often provides better long-term anatomical correction. Patients tend to experience fewer recurrences and less need for retreatment when compared to sclerotherapy alone. However, when spider veins or cosmetic improvement is the main goal, sclerotherapy remains a top performer.

A combination of both treatments can also yield superior results. For example, EVLA followed by sclerotherapy can close deep refluxing veins and remove visible spider veins, offering both symptom relief and aesthetic satisfaction.

When Should You Choose EVLA or Sclerotherapy?

Here’s a simplified comparison:

In many cases, our team at Always For You recommends a hybrid approach. For example, EVLA may be used first to close a problematic trunk vein, followed by sclerotherapy to clean up surface-level branches. This layered method leads to both clinical improvement and aesthetic satisfaction.

Another key factor is the patient’s lifestyle and expectations. For those with limited time or who cannot return for multiple sessions, EVLA may be more practical. For those primarily concerned with appearance, sclerotherapy offers excellent results with less downtime.

What Are the Risks?

Both procedures are considered safe, especially in experienced hands. At our clinic, all treatments are performed by board-certified experts using real-time imaging.

• Mild bruising or tenderness

• A pulling sensation along the treated vein

• Rare cases of superficial clotting or nerve sensitivity

• Temporary redness or itching at the injection site

• Brownish pigmentation that fades over time

• Rare allergic reactions or mild inflammation

Complications are rare, and when treated in a center with proper equipment and expertise, risks are minimized. We take special care to assess each patient’s vascular health before recommending treatment.

The Always For You Approach

Vein care is not just about closing a vessel—it’s about improving quality of life, comfort, and confidence. That’s why our approach begins with detailed ultrasound diagnosis, performed on-site. With our integrated imaging, surgical, and internal medicine teams under one roof, patients receive seamless, coordinated care.

We believe that healing starts from the first consultation, in a calm, hotel-like environment that puts you at ease. From there, our team tailors every step—whether EVLA, sclerotherapy, or both—to your personal health goals and lifestyle.

We also provide:

• Thorough pre-treatment assessments to understand vein function

• Post-procedure guidance for recovery and vein health maintenance

• Education on prevention to help minimize recurrence

This comprehensive approach ensures both immediate results and long-term wellbeing.

Recovery and Recurrence Prevention

After either treatment, you’ll be encouraged to walk regularly, wear compression stockings, and avoid prolonged sitting or standing. Maintaining a healthy weight and staying active also go a long way in preventing future vein issues.

Proper hydration, leg elevation when resting, and avoiding high heels or tight clothing can further support venous return. At Always For You, we provide personalized guidance to help patients maintain results.

We recommend a follow-up ultrasound 1–2 weeks after treatment to ensure everything is healing as expected—and to fine-tune any additional care if needed.

Final Thoughts: Which One is Better?

There’s no one-size-fits-all answer.

• For functional vein problems and larger varicosities, EVLA is typically more effective and longer-lasting.
• For cosmetic concerns or smaller veins, sclerotherapy is quicker, simpler, and more cost-effective.

If you're unsure, the best first step is a consultation with a vascular specialist. At Always For You Medical Center, we combine the diagnostic precision of top-tier hospitals with the personalized service of a boutique clinic. Whether you're seeking relief from discomfort or looking to restore smooth, healthy legs, we're here to help—every step of the way.