How Sclerotherapy Works for Varicose Veins: Juno Beach, Florida Dermatologist Explains

How Sclerotherapy Works for Varicose Veins: A Juno Beach Dermatologist Explains

Medically reviewed by Susan Schroeder, MD, board-certified dermatologist and dermatologic surgeon at Perfect Skin MD in Juno Beach, Florida. Serving Jupiter, Palm Beach Gardens, North Palm Beach, Singer Island, Tequesta, and greater Palm Beach County.

If you have spent a Florida summer in long pants because you did not want anyone looking at your legs, you are in very large company. Visible leg veins are among the most common reasons patients walk through our doors in Juno Beach, and they are also among the most treatable.

The confusing part is the marketing. Search for vein treatment in Palm Beach County, and you will find med spas, vein clinics, laser centers, and dermatology practices all selling something slightly different. This article strips the sales language out and explains, in plain English, exactly what happens in your leg when Dr. Schroeder performs sclerotherapy, what the published evidence says about results, and how to tell a good treatment plan from a bad one.

What Sclerotherapy Actually Does Inside the Vein

People often assume the injection dissolves the vein or drains it. Neither is true. Sclerotherapy closes the vein, and then your own immune system quietly clears it away.

Here is the sequence. The sclerosant is injected into the vein with a very fine needle. It deliberately damages the endothelium, the smooth inner lining of the vessel. Platelets gather at the damaged site, the vein wall swells and collapses inward, and the two sides seal against each other. The vein is now closed, so blood stops flowing through it and reroutes into deeper, healthier veins. The FDA prescribing information for polidocanol, one of the main sclerosants used in the United States, describes this same mechanism of endothelial damage followed by platelet aggregation and vessel closure.

Why closing a vein is safe for your circulation.

This is the question almost every patient asks, and it is a good one. The superficial veins we treat with sclerotherapy carry a small share of the blood returning from your legs. The deep veins do the heavy lifting. When a diseased surface vein is closed, circulation actually improves, because blood that was pooling and flowing backward in a leaky vessel now moves in the right direction through a competent one.

How long before the vein disappears

Closure happens within minutes. Disappearance takes longer. The AAD notes that small spider veins can vanish almost immediately. In contrast, larger spider veins and varicose veins usually darken first and remain visible for roughly one to three months before they clear. That gap between treatment and final result is the single most common source of patient disappointment, which is why we walk through the timeline at your consultation before a single injection is given.

How Common Are Varicose and Spider Veins?

If your veins make you feel self-conscious, the numbers are worth reading. This is not a rare cosmetic quirk. It is one of the most widespread chronic conditions in the country.

• About 23% of adults in the United States have varicose veins, according to a review published in the American Heart Association journal Circulation.
• 22 million women and 11 million men between the ages of 40 and 80 are affected, per the same review.
• 80% of men and 85% of women show some form of visible vein change once spider veins and reticular veins are counted alongside true varicose veins.
• Roughly 2 million adults go on to develop signs of chronic venous insufficiency, which can include swelling, skin changes, and ulcers.

Risk factors are well established and mostly out of your control: age, family history, pregnancy, being female, higher body weight, and jobs that keep you standing for hours. Teachers, nurses, hairstylists, restaurant staff, and retail workers in Jupiter and Palm Beach see this constantly.

The detail most people miss

Visible veins are sometimes cosmetic and sometimes a symptom. Aching, heaviness, throbbing, itching, and ankle swelling suggest the underlying valves are not working properly. That distinction changes the treatment plan, which is why a physician evaluation matters more than a quick injection appointment.

The Solutions Used in Sclerotherapy, and Which Are FDA Approved

Not every sclerosant is the same, and matching the solution and concentration to the size of your vein is most of the skill in this procedure. Dr. Schroeder keeps multiple options on hand rather than treating every leg with one product.

Polidocanol, sold as Asclera

Polidocanol received FDA approval in 2010 for uncomplicated spider veins and uncomplicated reticular veins in the leg. The approved labeling specifies 0.5% strength for spider veins at or under 1 mm and 1% for reticular veins between 1 and 3 mm, and it states plainly that the product has not been studied in veins larger than 3 mm. Patients tend to tolerate it well because it has a mild numbing effect.

Sodium tetradecyl sulfate, sold as Sotradecol

This detergent sclerosant has a longer track record in the United States and is used in lower concentrations for smaller vessels and higher concentrations for larger ones. It can be prepared as a foam, which displaces blood within the vessel and provides the medication with more contact time with the vein wall. Foam is generally reserved for larger targets.

A note on hypertonic saline and glycerin

Both are used in vein practices and off-label for this purpose, meaning the FDA has not approved them specifically as sclerosing agents for leg veins. Hypertonic saline stings noticeably during injection and carries a higher risk of skin injury if it leaks outside the vessel. We tell patients whenever a treatment is off-label, before consent is signed. That is a standard we hold across our practice, including our PRP treatments, and we think you deserve to know the regulatory status of anything going into your body.

What a Sclerotherapy Appointment Looks Like at Perfect Skin MD

Before your treatment

Your visit starts with a leg examination, a review of your medical history, and questions about clotting disorders, pregnancy, hormone therapy, and prior vein procedures. If your history or exam suggests the deeper venous system is involved, we’ll note that and coordinate the appropriate workup rather than injecting the surface and hoping for the best.

Practical prep is simple. Skip lotion, self-tanner, and oils on your legs that day. Do not shave right before the appointment. Bring or wear shorts, and plan to have your compression stockings ready at home.

During your treatment

Most sessions run about 30 to 45 minutes depending on how many vessels are treated. No anesthesia is required. Dr. Schroeder uses a very fine needle and injects each targeted vein in sequence, applying pressure and often a small amount of tape or cotton over each site. Many patients describe a brief stinging or cramping feeling that fades within seconds.

You walk out. There is no recovery room, no sedation, and no one to drive you home.

After your treatment

Compression is where results are won or lost. Clinical practice guidelines developed jointly by the American Venous Forum, the Society for Vascular Surgery, and allied phlebology societies review the evidence here and note that, where compression is used after intervention, guidance has favored short courses rather than long ones. Your exact instructions come from Dr. Schroeder based on which veins were treated and their size.

General aftercare we give most patients:

• Walk for 15 to 20 minutes right after the appointment, and walk daily afterward.
• Wear your compression garment exactly as instructed, including overnight if directed.
• Skip hot tubs, saunas, very hot showers, and hot yoga for about a week.
• Pause heavy lifting and high-impact exercise for several days.
• Protect the treated skin from sun for three to four weeks. The AAD flags this specifically, because sun exposure on healing injection sites is a driver of lasting dark spots. In South Florida, this is not optional.

How Well Does Sclerotherapy Work?

The strongest evidence for modern sclerotherapy comes from the EASI study. This multicenter randomized, double-blind trial compared polidocanol against sodium tetradecyl sulfate and saline placebo in 338 patients with spider or reticular veins. Reporting on that data, a review in the Journal of Vascular Surgery: Venous and Lymphatic Disorders notes patient satisfaction of 78% at 12 weeks, rising to 84% at 26 weeks, and physician-rated success in 95% of patients at the 12- and 16-week marks.

Two honest caveats belong right next to those numbers.

Sclerotherapy usually takes more than one session.

The AAD notes that complete clearing often requires three or more treatments. Anyone promising a single visit result for a leg full of veins is overselling. We space sessions to let each round finish clearing before deciding what still needs attention.

Treatment does not make you immune to new veins.

A vein that has been closed and absorbed does not come back. New veins can form because the genetics, hormones, and daily standing that produced the first set have not gone anywhere. Maintenance touch-ups every year or two are normal, not a sign that something failed.

Who Is a Good Candidate for Sclerotherapy

You are likely a strong candidate if you have spider veins, reticular veins, or small varicose veins; you are in reasonable general health; you are not pregnant or nursing; and you can wear compression and stay reasonably active afterward.

When we recommend something other than injections

Sclerotherapy is not the answer for everyone, and part of a physician evaluation is telling you so. We carefully evaluate anyone with a history of blood clots, active infection or skin breakdown at the treatment site, known allergy to sclerosing agents, significant arterial disease, or large varicosities that indicate failure of the saphenous system. That last group is usually better served by having ablation performed first by a vascular specialist. Injecting the surface while the underlying problem is untreated leads to fast recurrence and a frustrated patient.

Sclerotherapy Compared With Laser Vein Treatment

Both approaches are legitimate, and the right choice depends on the vessel, not on which device a practice happens to own.

The AAD describes sclerotherapy as the most common dermatologic treatment for leg veins, and that reflects clinical reality. Lasers earn their place on the face and on vessels too fine to inject. In practice, some patients get the best outcome from a combination, which is a conversation worth having with a physician who performs both rather than a clinic that offers one.

Mistakes That Ruin Sclerotherapy Results

1. Skipping compression. The garment is not a comfort item. It helps hold treated walls together while they seal.
2. Sun exposure on healing sites. Brown discoloration that could have faded in weeks can instead linger for months. In Juno Beach, that means covering up or staying out of direct sun on treated legs.
3. Judging results at two weeks. Larger vessels routinely look worse before they look better. Give it the full one to three months.
4. Treating only the surface. If the underlying valves are failing, injections alone are a temporary fix and recurrence is fast.
5. Choosing a provider by price alone. Dosing, concentration selection, and injection technique determine whether you get clean clearing or matting and staining.
6. Going straight to sitting still and walking after treatment supports circulation. A day on the couch does not help.

Why Palm Beach County Patients Choose Perfect Skin MD for Sclerotherapy

Here is the difference that matters most: Dr. Susan Schroeder performs every procedure herself. Your injections are not delegated to an aesthetician, a nurse injector, or a rotating technician. The board-certified dermatologist you consulted with is the one holding the syringe.

That is unusual in this market. Across Palm Beach County, a great many vein and cosmetic injection appointments are performed by non-physician staff under varying levels of supervision. You can verify any physician’s board certification through the American Board of Dermatology verification tool and confirm Florida licensure through the Florida Department of Health license portal. We encourage patients to check us and anyone else they are considering.

What that means for your legs:

• A real diagnostic evaluation before any injection, not an upsell script
• Multiple sclerosant options and concentrations, matched to your vein sizes
• Straight talk when a vascular referral would better serve you
• Clear disclosure when any agent or use is off-label
• Follow up with the same physician who treated you
• Over 25 years of dermatologic and dermatologic surgery experience behind every decision

You can review our full sclerotherapy for varicose veins service page, browse before and after photos from our practice, read about our direct patient care model, or explore the full range of dermatology services we offer in Juno Beach.

Frequently Asked Questions About Sclerotherapy

Sources and Further Reading

• American Academy of Dermatology, leg vein treatment overview
• Circulation, American Heart Association, varicose veins prevalence review
• FDA prescribing information for polidocanol injection
• Journal of Vascular Surgery: Venous and Lymphatic Disorders, cosmetic sclerotherapy review
• American Venous Forum and Society for Vascular Surgery, compression therapy practice guidelines

This article is general education, not medical advice, and reading it does not create a physician-patient relationship. Individual results vary. Candidacy, risks, and expected outcomes can only be determined during an in-person evaluation with a licensed physician.