Last updated on July 15, 2025
If you’ve been bothered by the appearance of spider veins or the discomfort of bulging varicose veins, you’re not alone. These vein issues are not only cosmetic concerns but can also indicate underlying vascular conditions. Fortunately, there’s an effective, minimally invasive solution — sclerotherapy.
At Vein Doctors Sydney, we offer ultrasound-guided foam sclerotherapy, a proven treatment used to eliminate both superficial and deeper vein issues. Our experienced team is highly trained in treating varicose and spider veins using safe, evidence-based techniques. In this article, we explore what sclerotherapy is, what conditions it treats, how much it costs, what aftercare involves, and what results you can expect.
What is Sclerotherapy?
Sclerotherapy is a non-surgical treatment for varicose veins and spider veins. It works by injecting a solution (called a sclerosant) into the affected vein. This solution irritates the vein wall, causing it to collapse and eventually be absorbed by the body, redirecting blood flow to healthier veins.
At Vein Doctors Sydney, we use ultrasound-guided foam sclerotherapy to treat larger varicose veins that may not be visible on the surface. Foam allows for better contact with the vein wall and greater precision during treatment — especially for veins deeper under the skin.
Sclerotherapy works by injecting a solution known as a sclerosant into the affected vein.
How Does Sclerotherapy Work?
Sclerotherapy works by injecting a solution — known as a sclerosant — into the affected vein, which causes the vein wall to collapse, seal shut, and gradually be reabsorbed by the body. This process redirects blood flow to nearby healthy veins, improving both the appearance of the veins and reducing related symptoms.
At Vein Doctors Sydney, we use a more advanced form known as ultrasound-guided foam sclerotherapy. The sclerosant is mixed into a fine foam, which displaces blood in the vein more efficiently than liquid solutions and makes better contact with the vein wall.
The “ultrasound-guided” aspect is what sets our technique apart. We use real-time ultrasound imaging to visualise the affected vein during the procedure. This allows our specialists to:
- Accurately identify both visible and hidden varicose veins
- Navigate twisted, branching, or deeper veins with greater precision
- Ensure that the foam is delivered exactly where it’s needed for maximum effect
- Minimise the risk of complications by avoiding nearby healthy structures
This method is particularly effective for larger varicose veins, recurrent vein issues, and cases where previous vein surgery or treatment hasn’t resolved the problem. It’s a walk-in, walk-out procedure with no general anaesthetic required and significantly reduced downtime compared to surgery.
What Conditions Does Sclerotherapy Treat?
Sclerotherapy is used to treat a wide range of vein conditions, including:
- Spider veins (tiny, visible veins close to the skin surface)
- Varicose veins (larger, bulging veins caused by valve failure)
- Residual varicose veins after surgery or endovenous laser treatments
- Recurrent varicose veins that have returned after previous procedures
- Reticular veins, which lie between spider and varicose veins in size
By addressing both cosmetic and functional concerns, sclerotherapy for varicose veins and sclerotherapy for spider veins can significantly improve symptoms such as:
- Heaviness and aching in the legs
- Burning or throbbing pain
- Itchiness or dry skin near the affected veins
- Leg fatigue and swelling
What Happens After the Procedure? Aftercare & Recovery
Sclerotherapy is a walk-in, walk-out treatment — you can return to light daily activities almost immediately. However, proper aftercare enhances treatment effectiveness and recovery:
- Compression stockings must be worn for 1–2 weeks to support vein closure and reduce swelling.
- Patients are encouraged to walk regularly to aid circulation and healing.
- Avoid intense exercise, saunas, and hot baths for at least 7–10 days.
- You may notice some bruising, redness, or firmness at the injection sites, which typically resolves over a few weeks.
- Avoid direct sunlight on treated areas to prevent pigmentation.
At Vein Doctors Sydney, we provide personalised aftercare plans and ongoing support to make your recovery as smooth and successful as possible.
How Much Does Sclerotherapy Cost?
The cost of sclerotherapy in Sydney depends on the number of veins treated, the size and depth of the veins, and whether ultrasound guidance is used.
At Vein Doctors Sydney, we begin with a detailed consultation and vascular ultrasound to assess your vein health. After this, we provide a tailored treatment plan and cost estimate.
To make treatment more accessible, Vein Doctors Sydney also offers flexible payment plans, allowing you to manage costs over time while still receiving expert care.
What Results Can I Expect?
Sclerotherapy delivers both cosmetic improvements and symptom relief. Spider veins typically fade within 3–6 weeks, while larger varicose veins may take 2–3 months or longer to resolve. Multiple sessions may be required depending on the severity and number of veins involved.
Patients often report:
- Less visible or completely faded veins
- Reduced leg pain, swelling, and fatigue
- Improved confidence and comfort
At Vein Doctors Sydney, we focus on achieving not only visible improvements but also long-term symptom relief and prevention of recurrence by addressing both surface and deeper venous issues.
Sclerotherapy Side Effects
Sclerotherapy is generally well tolerated. Some patients may experience minor side effects such as:
- Temporary bruising, firmness, or pigmentation
- Mild discomfort or itchiness at the injection site
- Rarely, allergic reactions or small blood clots
Your doctor will walk you through all sclerotherapy side effects and guide you on how to manage them, ensuring your experience is as safe and comfortable as possible.
How to Book an Appointment
At Vein Doctors Sydney, we are committed to providing personalised and compassionate care for patients seeking relief from spider or varicose veins. For more information on our services or to schedule a consultation at our clinic, please contact our friendly staff by either calling us on (02) 9023 9970, via our online form or by sending us an email.
Frequently Asked Questions
What is sclerotherapy used for?
Sclerotherapy treats abnormal veins such as varicose veins, spider veins, and reticular veins. It improves both cosmetic appearance and vein function.
Does sclerotherapy hurt?
Most patients experience minimal discomfort. You may feel a slight sting or warmth during the injection, but the procedure does not require anaesthesia and is usually well tolerated.
How many sessions will I need?
This depends on your vein condition. While some veins resolve after a single session, others — especially larger varicose veins — may require 2–3 treatments spaced several weeks apart.
What are the possible sclerotherapy side effects?
Minor side effects include bruising, temporary pigmentation, and skin irritation. More serious complications are rare and are minimised when performed by experienced doctors like those at Vein Doctors Sydney.
How long do sclerotherapy results last?
Treated veins are permanently closed and reabsorbed. However, new veins can develop over time, so ongoing vascular assessments are important. Long-lasting results can be achieved with proper care and follow-up.
This information is not intended to be used for diagnosis or treatment. It is aimed at presenting a perspective only and is not a substitute for a prescription. Anyone experiencing a medical condition should consult their doctor.
Book A