Spider Veins Symptoms, Causes, and Treatment

Also known as telangiectasia, are small veins located just under the surface of the skin.

What are Spider Veins?

Spider veins, also known as telangiectasia, are a group of dilated veins located just under the surface of the skin and most often found on the legs. Usually red or blue in color, they resemble spider webs or tree branches. While smaller than varicose veins, spider veins share some common characteristics with varicose veins in terms of causes and symptoms.

While sometimes a cosmetic issue, more often than not, there is an underlying venous disease that is of greater concern. These spider veins on legs can sometimes be painful, burn, itch or, in the worst instances, rupture and cause bleeding. For these reasons it is always best to have a Vein Specialist diagnose varicose veins or spider veins in order to rule out these larger issues. Insurance will typically cover treatment if you have painful spider veins if they affect your activities of daily living.

There are a lot of myths and misconceptions when it comes to spider veins.

Myth #1: Spider Veins are Only Cosmetic

Many people believe that spider veins are unsightly but do not require treatment. Often times, there is
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Spider Vein Symptoms

Spider veins are easily recognizable by their web-like or "tree branch" appearance and sometimes do not cause pain, however, the following symptoms are often present as well:

  • Aching legs
  • Painful legs
  • Burning or Itching
  • Swelling Legs
  • Rash
  • Bleeding Veins
  • Skin Ulcers

Often patients find the cosmetic appearance of spider veins distressing and that is reason enough to seek treatment. In these cases, insurance is not going to cover the treatment and we provide reasonable costs for sclerotherapy.

Spider Vein Picture

The easiest way to picture the venous system is like branches of a tree. The veins you cannot see are the larger branches, and the spider veins are like the leaves.

What Cause Spider Veins?

Spider veins in legs and varicose veins have similar causes. Normal veins have one-way valves that prevent blood from flowing in reverse as your body pumps blood back to the heart. When these valves cease to function properly, blood is allowed to collect, or pool, and the vein swells.

The following are found to be the most common causes of spider veins:

  • Aging - As we age, veins become weaker due to loss of elasticity.
  • Pregnancy - In order to support a growing fetus, the volume of blood in the body increases during pregnancy but blood flow from legs to pelvis decreases.
  • Heredity – Family History of Varicose or Spider Veins.
  • Standing or Sitting for long periods - Blood does not flow well without body activity.
  • Obesity - Additional weight puts additional pressure on veins in the legs.
  • History of Blood Clots
  • Use of Birth Control Pills

Cosmetic or Not?

cosmetic spider veins

Sometimes these spider veins can be successfully treated cosmetically with surface laser or sclerotherapy, however, if a larger vein problem exists, these types of treatments will either fail completely, or only work for a short period of time.

Spider Vein Treatment

The procedure for spider vein treatment has a fast recovery time. The treatment options we employ at Advanced Vein Institute of Arizona are:

  • Sclerotherapy (chemical injection)- Sclerotherapy can be used to treat telangiectasias, small varicose veins, and reticular veins. This can be a time and cost effective procedure but sometimes requires multiple sessions for complete successful removal. Occasionally spider vein treatment is performed with ultrasound guidance. In spite of improved laser technology, sclerotherapy remains the treatment of choice for lower extremity spider veins, reticular veins, and small varicose veins. Laser therapy for spider veins is typically more expensive and less effective. A 2015 study noted that laser treatment is associated with more pain than sclerotherapy and sclerotherapy can also treat the feeder veins.


  • Cost of Sclerotherapy- Spider veins removal cost is based on how many syringes are needed and how many locations we are treating. In addition, if you are symptomatic, such as treating veins that have hemorrhaged, your insurance may cover the treatment. Click for current pricing.


  • Contraindications -Sclerotherapy should not be performed in patients who have signs of acute thrombosis / phlebitis,due to the increased risk of DVT. Also, pregnant women should defer treatment until after delivery.


  • Cosmetic Laser Surgery- We are proud to offer the Alma Harmony Laser for spider veins, facial feins, and small varicose veins.

Next Steps for Vein Evaluation


Now you know what causes spider veins and we believe that every patient's situation is unique, and every varicose and spider vein treatment should be specifically tailored for each patient. Both varicose and spider veins should be fully diagnosed in order to rule out any larger, more complex issues like Chronic Venous Insufficiency (CVI) or Venous Reflux Disease. We perform an exam and duplex ultrasound to enable us to properly diagnose and recommend the best treatment for spider veins.

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