Sclerotherapy is a tried and true method of dealing with
smaller bluish veins under the skin called reticular veins
and tiny telangectasias commonly known as spider veins.
Many chemicals, called sclerosants, have been used and they
all work by causing irritation of the inner lining of the
vein. This causes the vein to close and, over time, the
destroyed vein is eliminated by the body. For many years,
"saline injections" were the standard sclerosant and used
virtually everywhere. Unfortunately, saline injections had
significant drawbacks. They were painful and could damage
the skin and even cause an ulcer to develop. At The Vein and
Laser Center, we have never used saline for these reasons.
Instead, we use two widely used sclerosants which have
become the industry standard for sclerotherapy. These are
Sodium Tetradecyl Sulfate, STS for short, and Polidocenol,
or Pol. These agents are extremely safe with allergic
reactions very rare. They are used in various concentrations
and are injected directly into the vein with a tiny needle
about the size of a hair. This feels like a mosquito bite
and most patients find this relatively painless. Compression
is used immediately after the treatment and the compression
stocking should be worn for several days but as a general
rule the longer they are used, the better the result.
Forty-eight hours is best but certainly not more than a
week. It commonly takes several weeks for the spider veins
to start to disappear. For this reason we do not retreat the
same area sooner than four to six weeks.
For those rare patients who are phobic to needles or feel
they cannot tolerate sclerotherapy, we have successfully
used the Lyra laser to eliminate these surface veins. It is
also safe and effective for veins up to 4 millimeters in
diameter.
Foam Sclerotherapy is a technique gaining increased
acceptance as an adjunct to standard sclerotherapy. This
technique has actually been around for many decades but has
only recently been found to increase the effectiveness of
sclerotherapy in closing larger veins. Sclerosant is simply
mixed with air and injected into a vein. The microscopic
bubbles thus formed allows increased contact between the
chemical and the vein wall without being washed away and
diluted by the blood inside the vein. We have used foam
sclerotherapy with great success, closing even large,
bulging varices.
In addition, sclerotherapy can be used to treat more
deeply situated veins not visible from the surface that are
not amenable to ambulatory phlebectomy. Ultrasound can be
used to guide the injections into the underlying diseased
vessels. This procedure, known as Ultrasound-Guided
Sclerotherapy, or USG, allows sclerosant to be administered
safely and accurately to the problem veins hidden from view.
A few comments about sclerotherapy: The first principle
is that the smaller the vein to be eliminated, the greater
the success. Secondly, varicose veins treated by
sclerotherapy will recur if venous reflux through the
greater or lesser saphenous vein is not controlled first.
Most importantly, disappearance of the veins takes time and
is rarely 100%. The majority of patients undergoing
sclerotherapy will see their veins cleared or at least
significantly improved (85% improvement is generally
accepted as the "industry standard"). The number of
treatments required is quite variable and cannot be
predicted at the beginning of treatment although an estimate
can be made. Unfortunately, there is no guarantee that
sclerotherapy will be effective for you. About 10% of
patients undergoing sclerotherapy will have fair to poor
results. In very rare cases they may actually be worse. Once
reflux, if present, has been treated, there is no way to
predict who will have less than satisfactory results.
Lastly, they may come back in new locations. This cannot be
prevented because any treatment for varicose vein disease is
treating the outward manifestation of an underlying
abnormality of the veins for which there is no cure. All of
this having been said, the vast majority of our
sclerotherapy patients have seen excellent results.