Many patients ask me about sclerotherapy for spider veins after living with burning, itching, or aching legs for years. Sclerotherapy is a simple, in-office treatment that closes small problem veins with a series of tiny injections. However, it works best when we first understand why those veins formed. In this article, I explain who is a good candidate, how the procedure works, and why I always start with an ultrasound.
Key Takeaways
- Sclerotherapy closes spider veins and small varicose veins by injecting a solution through a very small needle.
- I recommend it for veins that cause symptoms such as burning, itching, aching, or heaviness, not as a purely cosmetic treatment.
- An ultrasound comes first, because spider veins can be a surface sign of a leaking vein deeper in the leg.
- Larger varicose veins fed by a leaking main vein usually need radiofrequency ablation before sclerotherapy.
- Most people return to normal daily activity the same day, and more than one session is often needed.
What Spider Veins Are and Why They Form
Spider veins are small, widened blood vessels just under the skin. They are usually red, blue, or purple and form web-like or branching patterns. Most appear on the thighs, calves, and ankles.
Some spider veins are simply small surface vessels. Others, however, are fed by pressure from deeper veins that are not working well. Inside healthy leg veins, one-way valves keep blood moving toward the heart. When those valves leak, blood flows backward and pools. Over time, that pressure can show up as spider veins, varicose veins, or both. I explain how the two differ in varicose veins vs. spider veins.
Symptoms That Lead Patients to Sclerotherapy
Spider veins do not always cause problems. Still, many of my patients notice real symptoms, such as:
- Burning or stinging over a cluster of veins
- Itching that keeps coming back
- Aching, throbbing, or tired legs after standing
- A heavy feeling in the legs by the end of the day
- Mild ankle swelling
I do not offer sclerotherapy for appearance alone. Instead, I look at how your legs feel and what is happening in the veins beneath the surface.
Why I Start With an Ultrasound
Before any treatment, I perform a duplex ultrasound. This painless scan shows the direction of blood flow in your leg veins. It also tells me whether a larger vein is leaking.
That step matters. If a leaking main vein is feeding your spider veins, injecting the small veins alone rarely lasts. New veins tend to keep appearing. In that case, I usually treat the source first with radiofrequency ablation. Then sclerotherapy can clean up the smaller branches that remain.
Where Deeper Leaks Usually Start
Two main surface veins run up each leg. The great saphenous vein starts near the inner ankle and travels up the inner leg to the groin. Meanwhile, the small saphenous vein runs from the outer ankle up the back of the calf to the knee. When valves in either vein leak, nearby branches can swell into varicose veins.
Smaller connecting veins, called perforator veins, can also leak. They push blood toward the skin under higher pressure. That pressure may feed clusters of spider veins on the thigh, knee, or lower leg. Because of this, the ultrasound map guides every step of my plan for sclerotherapy for spider veins.
How Sclerotherapy for Spider Veins Works
Sclerotherapy is done right in the office. You lie comfortably on the exam table while I clean the skin. Next, I use a very fine needle to inject a medicine called a sclerosant into each target vein. For some veins, I use ultrasound to guide the needle.
The solution irritates the inner lining of the vein. As a result, the vein seals shut, and blood reroutes through healthier veins nearby. Over the following weeks, your body slowly absorbs the closed vein.
A typical session takes less than an hour. Most people feel only small pinches and brief stinging. No general anesthesia is needed, and there is no incision. You can read a clear overview of the procedure on RadiologyInfo.org, a patient site from the Radiological Society of North America and the American College of Radiology.
Who Is a Good Candidate?
You may be a good candidate for sclerotherapy for spider veins if:
- Your spider veins or small varicose veins cause burning, itching, aching, or heaviness
- Your ultrasound shows no major leaking vein, or that vein has already been treated
- You are able to walk and wear compression stockings after treatment
- You are not pregnant or breastfeeding
On the other hand, sclerotherapy may not be right for you if you have an active blood clot or certain other health conditions. We will review your history and medications together before we decide.
What Recovery Looks Like
Most people walk out of the office and return to normal daily activity the same day. I usually recommend compression stockings for a short time afterward. Walking is encouraged because it keeps blood moving.
You may notice some bruising, redness, or small firm areas along the treated veins. These usually fade over a few weeks. Some people also see light brown streaks that take longer to fade. In addition, I ask patients to avoid hot tubs, heavy exercise, and strong sun on the treated area for a short time.
Results take patience. Small veins often fade over several weeks, while larger ones can take a few months. Many people need more than one session. For a full day-by-day guide, see my article on sclerotherapy recovery.
Will Insurance Cover It?
Coverage depends on your plan and your symptoms. Many insurance plans cover vein treatment when it is medically necessary, especially when an ultrasound shows reflux and symptoms affect daily life. However, plans often do not cover treatment done only for appearance. We accept most insurance plans, and because we are a small, personal practice, my staff works with you and your insurance company before treatment to confirm what is covered. Occasionally, an insurer changes its decision after an approval, so we keep you informed along the way.
A Practice Where You See the Same Doctor
Coastal Vascular Center is a small, physician-owned practice, not a corporate chain. You see me at every visit, and I personally perform every procedure, including every sclerotherapy session. Your care is never handed off to a physician assistant or nurse practitioner.
Find Out if Sclerotherapy Is Right for You With Dr. Ayar
If spider veins or small varicose veins are causing burning, itching, aching, or heavy legs, start with an ultrasound evaluation. We will find the cause and build a plan that fits your symptoms. You will see Dr. Ayar at every visit in Pearland or Lake Jackson.
