What is Injected into Spider Veins

Nov 20, 2023


Spider veins, also known as telangiectasias, are small, dilated blood vessels that appear near the surface of the skin. They are typically blue, purple, or red in color and often resemble spider webs or tree branches. Spider veins can be a cosmetic concern for many individuals, causing self-consciousness and a desire to find effective treatment options.

Understanding Spider Veins

Before delving into what is injected into spider veins, it is crucial to understand the nature of these veins and why they occur. Spider veins commonly develop due to venous insufficiency, a condition where the valves in the veins become weakened or damaged, causing blood to pool and veins to enlarge. Hormonal changes, prolonged standing or sitting, obesity, and genetics can all contribute to the development of spider veins.

Non-Surgical Treatment for Spider Veins

When it comes to the treatment of spider veins, there are both non-surgical and surgical options available. Non-surgical treatments are often preferred due to their effectiveness, minimal invasiveness, and shorter recovery times. One of the most commonly used non-surgical treatments is sclerotherapy.


Sclerotherapy involves injecting a solution directly into the spider veins, causing them to shrink and fade over time. The solution, known as a sclerosant, works by irritating the lining of the blood vessel, leading to the formation of scar tissue. This scar tissue eventually closes off the vein, rerouting blood flow to healthier veins. Sclerotherapy is a highly effective treatment for spider veins and has been used for several decades.

The Sclerosant Solution

The sclerosant solution used in the treatment can vary depending on the specific needs and requirements of the patient. Commonly used sclerosants include:

  • Polidocanol: A popular sclerosant known for its safety and effectiveness.
  • Sodium Tetradecyl Sulfate: Another commonly used sclerosant that works by damaging the endothelium, the cells lining the blood vessels.
  • Hypertonic Saline: Saltwater solution that causes dehydration and subsequent scarring of the vessel.

During the sclerotherapy procedure, the sclerosant solution is injected into the spider veins using a fine needle. The entire process is relatively quick, and multiple injections may be required depending on the size and number of spider veins being treated.

Advantages of Sclerotherapy

Sclerotherapy offers several advantages as a non-surgical treatment for spider veins:

  1. High Success Rate: Sclerotherapy has a high success rate, with studies showing clearance rates of 80-90% in treated veins.
  2. Minimal Discomfort: The procedure is generally well-tolerated, with only mild discomfort reported during the injections.
  3. No Downtime: Sclerotherapy is an outpatient procedure that requires no downtime, allowing individuals to resume their regular activities almost immediately.
  4. Customizable Treatment: The treatment can be tailored to the unique needs of each patient, ensuring optimal results.
  5. Minimal Side Effects: Side effects, such as bruising, itching, or slight inflammation, are temporary and subside within a few days.

Choosing the Right Provider

When considering sclerotherapy or any other treatment for spider veins, it is essential to choose a qualified professional. Look for doctors who specialize in vascular medicine and have experience in treating spider veins. At the Vein Center of Arizona, our team of expert doctors is passionate about providing the highest quality care to our patients.


If you are struggling with the appearance of spider veins, sclerotherapy can be a highly effective and safe non-surgical treatment option. The procedure involves injecting a sclerosant solution into the spider veins, causing them to fade and eventually disappear. With its high success rates, minimal discomfort, and customizable treatment approach, sclerotherapy has gained popularity as a trusted solution for spider veins. Take the first step towards healthier and more beautiful legs by consulting with the experienced doctors at the Vein Center of Arizona.