Informed Consent

While sclerotherapy is a very safe and effective treatment for spider veins, bear in mind that all medical procedures carry potential risk and side effects.

Potential Risks and Side Effects

Transient hyperpigmentation:
After sclerotherapy you may notice some discoloration (dark streaks) after treatment. This occurs when the blood gets trapped inside the vein after it closes down. We can usually “flush” the trapped blood out on your next visit. If the flushing does not alleviate the discoloration it will fade on its own in 4 to 12 months. In rare instances, this darkening of the skin may persist for years.

Skin Ulceration:
In rare cases, a blister may form, open, and become ulcerated. Healing occurs slowly over a few months. After healing, this will usually leave a scar.

Allergic Reaction:
Very rarely, a patient may have an allergic reaction to the sclerosing agent. The risk of this is greater in patients who have a history of allergies.

Deep Vein Thrombosis:
This is a very rare complication. The dangers of deep vein thrombosis include the possibility of pulmonary embolus (a blood clot carried to the lungs) and post-phlebitic syndrome, resulting in a permanent swelling of the leg.

Most Common Side Effects:
The veins may be tender to the touch after treatment, and an uncomfortable sensation may run along the vein route. This discomfort is usually temporary. Bruising is very common and to be expected. Some patients complain of an itchy sensation after treatment, which is also very normal. Trapped blood may cause a discoloration, which can be flushed out, although this may leave hyperpigmintation up to one year.

Alternative Treatments:
Spider veins are not life-threatening conditions, treatment is not mandatory. Some patients get adequate relief of symptoms from wearing graduated support stockings. The other option is to receive no treatment at all.

By signing an informed consent form, you are acknowledging you understand the risks of sclerotherapy and alternative methods of treatment. Do not hesitate to ask your physician to explain in more detail any concerns you may have about risk and complications.

Contact the Vein and Vascular Laser Institute today for additional information:
256-241-3600