While typically not as serious as varicose veins, spider veins should not be ignored when they appear on the legs and lower body. Spider veins are tiny blood vessels that form in web-like patterns usually as a result of a hereditary predisposition for the veins to dilate. They may be accompanied by some itching or discomfort, though most people will seek treatment due to the unsightly appearance of spider veins.
Quick Answer: You can say goodbye to most spider veins with sclerotherapy, an office treatment in which a fine needle injects a solution that seals the tiny veins so the body gradually absorbs them. Most people need one to three sessions spaced several weeks apart, and the veins fade over weeks to a few months. Because new spider veins can form over time, and some are a surface sign of deeper vein reflux, the best long-term results come from a proper vein assessment first, sensible prevention and occasional touch-up treatment.
If you want to restore the beautiful appearance of your legs just in time for summer, you should seek the care of a vein specialist serving Houston. In a vein care clinic, you might explore treatment with sclerotherapy, which uses an injectable solution to collapse these veins and cause them to be absorbed into the body as scar tissue.
Meet your vein specialist
Dr. Syed Raza, MD
Vascular & Interventional Radiology · Founder, Premier Vein & Vascular Center
Fellowship-trained interventional radiologist certified by the American Board of Radiology and the Royal College of Radiologists (UK). Former Chief of Interventional Radiology at UTMB Galveston and Memorial Hermann Memorial City, with 15+ years treating varicose veins, venous reflux and peripheral arterial disease.
What Are Spider Veins, Exactly?
Spider veins, known medically as telangiectasias, are tiny dilated veins that sit just under the surface of the skin. They are usually less than a millimeter across and look like fine red, blue or purple lines. They may branch out like a spider web, fan out in a starburst or appear as short, straight threads, most often on the thighs, behind the knees, around the ankles and sometimes on the face.
Slightly deeper and larger are reticular veins, sometimes called feeder veins. These are flat, blue-green veins one to three millimeters wide that often run beneath a cluster of spider veins and supply them with blood. If the feeder vein is left untreated, the spider veins above it tend to come back. That is one reason a careful look at the whole area matters more than simply treating the visible red lines.
Larger still are varicose veins: bulging, rope-like veins three millimeters or more in diameter. All three are part of the same spectrum of vein disease, but they differ in size, depth and how they are treated.
Why Spider Veins Develop
Heredity is the strongest factor, as many patients notice the same pattern on a parent or grandparent. But genetics usually works together with other influences that weaken small vein walls or raise pressure inside them:
- Hormones. Estrogen and progesterone relax vein walls, which is why spider veins often appear or worsen during pregnancy, around menopause or with hormonal birth control or hormone therapy.
- Pregnancy. Increased blood volume and pressure from the growing uterus on pelvic veins add load to the leg veins.
- Long hours on your feet or sitting still. Without regular calf muscle contraction, pressure in the leg veins stays high.
- Age. Vein walls lose some elasticity over time.
- Sun exposure. On the face and other exposed skin, ultraviolet damage weakens the skin and the vessels just beneath it.
- Excess body weight and minor trauma, such as repeated bumps or bruising, can also play a role.
- Underlying vein reflux. When valves in larger veins fail, the increased pressure can push blood into small surface veins and create new clusters.
Spider Veins vs. Reticular Veins vs. Varicose Veins
Patients often use these terms interchangeably. The differences matter because they determine which treatment works best.
| Feature | Spider veins | Reticular veins | Varicose veins |
|---|---|---|---|
| Size | Under 1 mm | 1 to 3 mm | 3 mm or larger |
| Appearance | Fine red, purple or blue lines, web-like | Flat blue-green veins under the skin | Raised, twisted, rope-like bulges |
| Common symptoms | Usually cosmetic; sometimes mild itching or burning | Mild aching in some people | Aching, heaviness, swelling, cramps, itching |
| Possible underlying reflux | Sometimes | Often feed spider veins | Frequently |
| Usual treatment | Sclerotherapy | Sclerotherapy | Ablation, foam sclerotherapy, phlebectomy |
Are Spider Veins a Sign of Something More Serious?
On their own, spider veins are usually harmless. Most people treat them because they are self-conscious about how their legs look, which is a perfectly reasonable reason. However, spider veins can sometimes be the visible tip of a deeper problem.
We look more carefully when spider veins are dense around the inner ankle (a pattern called corona phlebectatica), when they appear together with leg swelling, heaviness or night cramps, or when there are varicose veins or skin discoloration nearby. These can be signs of chronic venous insufficiency, where faulty valves in a larger vein let blood fall backward down the leg. Treating only the surface veins in that situation tends to give short-lived results, because the pressure that created them is still there.
How We Evaluate Spider Veins
Every patient who comes to Premier Vein for spider veins gets an assessment that looks beyond the surface.
- Focused history. We ask when the veins appeared, whether they are spreading, whether you have leg symptoms such as aching, swelling or restless legs, and about pregnancies, hormone use, previous clots and family history.
- Examination. We examine both legs standing and lying down, map the spider veins and look for reticular feeder veins, varicose veins, swelling and skin changes.
- Ultrasound when it is indicated. If your symptoms or exam suggest reflux in a larger vein, we perform a venous duplex ultrasound in our accredited vascular lab to check the valves before any cosmetic treatment.
- A clear plan. We explain which veins will be treated, in what order, how many sessions are likely and what results are realistic for your skin and vein pattern.
Treatment Options for Spider Veins
Sclerotherapy
Sclerotherapy remains the most reliable treatment for spider and reticular veins on the legs. A very fine needle delivers a small amount of medicine into the vein. The solution irritates the inner lining so the vein walls stick together and close. Over the following weeks, the body breaks down the sealed vein and blood is rerouted through healthy vessels.
A typical session takes about 15 to 30 minutes. Most patients describe a series of small pinpricks and sometimes a brief cramping or stinging sensation. You walk out immediately afterward and can return to most normal activities the same day.
Foam sclerotherapy for feeder veins
Larger reticular or small varicose veins that feed a cluster of spider veins may be treated with the same medicine mixed into a foam, which displaces blood and stays in contact with the vein wall longer. Deeper feeder veins can be targeted with ultrasound-guided foam sclerotherapy.
Treating the underlying reflux first
If an ultrasound shows a failing saphenous vein, we usually treat that source first with a minimally invasive ablation, and then clear the remaining surface veins with sclerotherapy. Doing it in this order tends to give longer-lasting cosmetic results.
What to Expect Before and After Sclerotherapy
A little preparation makes treatment easier:
- Avoid applying lotion or oil to your legs on the day of treatment
- Wear loose, comfortable clothing and bring your compression stockings if we have prescribed them
- Tell us about all medicines, including blood thinners, and whether you could be pregnant
After treatment, you will usually wear compression stockings for a short period, often several days to two weeks depending on the size of the veins treated. Walking is encouraged right away. For the first couple of weeks it is sensible to avoid hot tubs, saunas, very hot baths and intense lower-body workouts, and to protect treated areas from strong sun.
It is normal for treated veins to look worse before they look better. Bruising, small red bumps at injection sites and a darker appearance of the treated vein are common in the first weeks. Spider veins typically fade over three to six weeks, while larger veins can take a few months. Some patients notice light brown staining along a treated vein, which usually fades gradually, and occasionally a blush of new tiny vessels (called matting) appears near a treated area and may need additional treatment.
Who Is a Good Candidate for Sclerotherapy?
Most healthy adults with spider or reticular veins on the legs are good candidates. The ideal patient has realistic expectations: the goal is a clear, visible improvement in the treated area, not perfectly flawless skin, and new veins may appear in the future.
We usually postpone or adjust treatment in a few situations:
- Pregnancy and breastfeeding. We wait until after pregnancy and nursing, partly because many pregnancy-related veins improve on their own.
- A recent or current blood clot. A history of deep vein thrombosis, or a known clotting disorder, needs careful review before any injection treatment.
- Limited mobility. Walking after treatment is part of recovery, so patients who are bedbound or recovering from major surgery are usually treated later.
- Active skin infection or significant leg swelling. These are addressed first.
- Untreated reflux in a larger vein. As explained above, the source is treated first so the surface results last.
Blood thinners do not always rule out sclerotherapy, but they can increase bruising, so please bring a full medication list. Darker skin tones can be treated safely as well; because some patients are more prone to temporary staining, we tailor the solution strength and aftercare advice to your skin.
Planning Ahead for Summer
Because results take weeks to appear and many patients need more than one session, the best time to start treating spider veins is often in the fall or winter. That gives enough time for bruising to clear, for the veins to fade and for touch-ups to be completed before shorts and swimwear season. Cooler months also make wearing compression stockings more comfortable in the Houston climate, and it is easier to keep freshly treated skin out of the sun.
Can Spider Veins Come Back?
A vein that has been successfully closed does not reopen, but new spider veins can develop over the years because the tendency to form them, whether from heredity or hormones, does not go away. Most patients come back for occasional maintenance sessions. You can slow the development of new spider veins by:
- Staying active and walking daily to keep the calf muscle pump working
- Taking short movement breaks if you stand or sit for long periods at work
- Elevating your legs at the end of the day
- Wearing graduated compression stockings on long flights or long shifts
- Maintaining a healthy weight
- Using sunscreen on exposed skin, especially the face
Seek medical care promptly if you notice:
- Bleeding from a surface vein that does not stop with firm pressure and leg elevation
- Sudden swelling, pain and warmth in one calf or thigh, especially after a procedure or long trip
- Chest pain or sudden shortness of breath
- A painful, red, hard cord along a vein with fever or spreading redness
When to See a Vein Specialist in Houston About Spider Veins
If spider veins bother you, it is worth seeing a specialist rather than a general cosmetic provider, especially if you also have aching, swelling or visible varicose veins. A vein specialist can tell whether your spider veins are purely cosmetic or connected to reflux in a deeper vein, which changes both the treatment plan and how long the results last.
At Premier Vein & Vascular Center, Dr. Syed Raza and our team assess spider veins with the same care we bring to complex vein disease, using our IAC-accredited vascular lab when an ultrasound is needed. If you are looking for a vein clinic in Houston for spider vein treatment, you can contact our office at (832) 321-5355; same-week appointments are usually available.
Talk With a Specialist at Premier Vein
Have questions about your symptoms or treatment options? Dr. Syed Raza and the team at Premier Vein & Vascular Center can evaluate your concerns and explain your options clearly. Same-week appointments are usually available, and most insurance plans are accepted.
Frequently Asked Questions
How many sclerotherapy sessions does it take to get rid of spider veins?
Most patients need one to three sessions, spaced several weeks apart, to clear a given area. The number depends on how many veins there are, their size and whether feeder veins are involved. Occasional touch-up sessions may be needed in later years as new veins form.
Does insurance cover spider vein treatment?
Treatment of spider veins alone is usually considered cosmetic and is often not covered by insurance. If an ultrasound shows underlying venous insufficiency causing symptoms, treatment of that condition may be covered by most insurance plans, including Medicare, when medical criteria are met.
Is sclerotherapy painful?
Sclerotherapy uses a very fine needle, so most patients feel only small pinpricks and sometimes a brief sting or cramp. No anesthesia is needed and you can walk out and resume most activities the same day.
Can spider veins go away on their own?
Spider veins on the legs rarely disappear on their own once they have formed. Some veins that appear during pregnancy may improve after delivery, so we usually wait several months after childbirth before treating them.
Is laser or sclerotherapy better for spider veins on the legs?
For most spider and reticular veins on the legs, sclerotherapy is considered the treatment of choice because it treats the vein and its feeders directly. Surface laser can help very fine vessels or patients who cannot have injections, but it is generally less effective on leg veins.
Can I exercise after spider vein treatment?
Walking is encouraged immediately after sclerotherapy. Most people can return to light exercise within a day or two, but it is best to avoid heavy lifting, intense leg workouts and hot environments for about one to two weeks.
How long do spider vein treatment results last?
A spider vein that has been successfully closed by sclerotherapy is gone for good. However, the tendency to develop new spider veins remains, so many people choose a short touch-up session every year or two to keep their legs looking clear.
Trusted Health Resources
- Chronic Venous Insufficiency, Society for Vascular Surgery
- Venous Insufficiency, MedlinePlus Medical Encyclopedia (NIH)
- Varicose Veins and Spider Veins, MedlinePlus (NIH)