Table of Contents
Varicose and spider veins affect nearly 35% of people in the United States, causing discomfort and visible changes to the veins in the legs. Sclerotherapy, a treatment with a history dating back to the 1930s, is a minimally invasive procedure that can reduce the appearance of these veins and relieve symptoms. Let’s dive in and explore sclerotherapy, who it’s for, and what you can expect from the treatment process.
What is Sclerotherapy?
Sclerotherapy is a widely used medical procedure to treat varicose veins, spider veins, and other venous conditions. During the procedure, a sclerosant—a chemical solution, often salt-based—is injected into the affected vein through a small needle. This causes the vein to collapse and seal shut. Over time, the treated vein turns into scar tissue and gradually fades away, redirecting blood to healthier veins.
Sclerotherapy is an outpatient treatment performed in a doctor’s office, typically taking 15 to 30 minutes. Multiple sessions are often required, with most patients needing about three treatments spread over three months. Sclerotherapy is effective for many patients and can treat both younger and older individuals with minimal discomfort.
What are the Side Effects of Sclerotherapy?
While sclerotherapy is generally safe, it can result in temporary or long-term side effects. Possible side effects include:
- Bruising
- Skin discoloration
- Small red blood vessels
- Raised red areas
- Skin sores
These side effects are often mild, the most common being temporary redness or inflammation at the injection site. In rare cases, skin spotting or staining may occur, appearing as small brown spots and affecting approximately 10% of patients. If brown spots do occur, they usually fade away in about a year.
Who is a Candidate for Sclerotherapy?
Sclerotherapy is suitable for individuals with spider veins or smaller varicose veins. However, certain conditions or medical histories may disqualify someone from undergoing the treatment. Candidates should not have a history of blood-clotting disorders or be pregnant within the last three months.
Conditions That May Exclude You from Sclerotherapy:
You may be a suitable candidate for sclerotherapy if you have visible spider veins and no underlying chronic conditions. The procedure can also be used to treat smaller varicose veins. There is no age restriction for sclerotherapy, but a history of blood-clotting issues may disqualify you from the treatment.
It is recommended to avoid sclerotherapy if you’ve been pregnant or given birth within the past three months. Being medically compliant and following your doctor’s instructions are crucial for achieving the best possible outcomes from the procedure.
Even though sclerotherapy is safe, if you have met any of the following conditions, you should avoid sclerotherapy:
- Bedridden
- Pregnant or nursing
- Allergic to the sclerosant (rare)
- Taking blood thinners
- Heart conditions
- Blood clot or inflammation issues
What to Expect with Sclerotherapy
Before undergoing sclerotherapy, your physician will review your medical history, including any allergies, recent illnesses, and medications you’re taking. Your doctor may also perform an ultrasound of your leg veins to assess your condition further.
Before approving your treatment, your doctor will also need to know if you have the following:
- Any previous allergic reactions to medications
- Any recent illnesses or family history of illness
- A list of all current medications, particularly blood thinners, herbal supplements, aspirin, Aleve, or other prescription and over-the-counter drugs
On the day of the procedure, avoid shaving or applying lotion to your legs, and wear comfortable clothing. The procedure itself is quick and does not require anesthesia.
You will lie on your back while a small needle is inserted into the vein, delivering the sclerosant solution. Some patients may experience a mild stinging or cramping sensation. After the injection, the doctor will compress and massage the area to distribute the solution.
Sclerotherapy Aftercare and Recovery
Once the procedure is complete, you can stand up and leave the office the same day. To help with healing and vein compression, it is advised to wear a compression bandage or stocking for about two weeks. During this period, avoid strenuous physical activities and sunbathing. Your doctor will schedule a follow-up appointment to monitor your progress within a month.
Is Sclerotherapy Right for You?
Sclerotherapy can be an effective treatment for varicose or spider veins. However, it may only be suitable for some. Those with underlying medical conditions or specific vein characteristics might require different treatments. Sclerotherapy is a minimally invasive option that doesn’t require hospitalization and is more cost-effective than surgical alternatives.
If you’re experiencing discomfort or are concerned about the appearance of varicose veins, consult your doctor to determine the most appropriate treatment option.
Next Steps in Varicose Vein Treatment
At The Vein Center of North Florida, we specialize in treating venous disorders, including varicose and spider veins. If you’re considering sclerotherapy or want to explore other treatment options, schedule an appointment to discuss your condition and potential solutions.
Frequently Asked Questions About Sclerotherapy
Most patients experience an 80% improvement in the appearance of treated veins. Multiple sessions may be required for the best results.
Discomfort is minimal. Some patients report mild stinging or cramping during the injection, but it usually subsides quickly.
Small veins may fade within a few weeks, while larger veins can take 3 months to fully resolve.
Treated veins generally do not return, though new veins can appear over time due to genetics, lifestyle, or other health conditions.
Yes. You’ll need to wear compression stockings for about two weeks and avoid strenuous activity, hot baths, and sun exposure during that period.
Sclerotherapy may be covered by insurance if it’s performed for medical reasons—such as treating pain, swelling, or non-healing ulcers. However, if the procedure is done for cosmetic purposes, it is typically not covered.
Since coverage can vary by provider and plan, it’s best to contact your treating physician’s office directly to confirm whether your specific insurance plan includes this treatment.


