Treatment

Sclerotherapy

Choose a preferred language

The most common way to treat spider and small varicose veins is sclerotherapy. This is a simple office procedure. After treatment, you can return to your daily activities right away. For best results, some veins may need to be treated more than once.


What sclerotherapy does

This treatment causes spider and small varicose veins to disappear over time. It's done by injecting the veins with a chemical that causes them to scar and collapse. The body then reroutes the blood to flow only through the healthy veins. Over time, the treated veins go away. Sclerotherapy will not prevent new spider and varicose veins from forming. 


What this treatment involves

Your doctor may use an ultrasound machine to help them find the veins to treat. They will inject the veins using a fine needle. In most cases, this isn’t painful. You may feel a slight burning or stinging. Many veins can be treated in a single session.

After treatment, the injection sites are covered with gauze and tape. You may also have to wear bandages or elastic stockings, as directed.

Closeup of needle inserted into spider vein.


Recovering at home

At first, your legs will most likely be bruised. For a brief time, they may even look worse than they did before treatment. But you can expect to see good results in 6 to 8 weeks. For the best outcome, here are some helpful hints:

  • Wear elastic stockings or bandages as directed.

  • Raise your legs as advised, to help reduce swelling.

  • Walk each day to increase blood flow.

  • Follow your doctor’s advice about other kinds of exercise.


When to contact your doctor

Contact your doctor right away if you notice:

  • Pain in your legs or feet.

  • Bleeding at injection sites.

  • Extreme swelling or bruising.

  • Fever.

  • Chest pain.

  • Skin breakdown at the site of the injection.

Online Medical Reviewer: Anne Fetterman RN BSN

Online Medical Reviewer: Deepak Sudheendra MD

Online Medical Reviewer: Raymond Kent Turley BSN MSN RN

Date Last Reviewed: 05/01/2025

© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
doctor icon

Find the right provider to meet your needs

From primary care to specialty services and more.

Find a Doctor
appointment clock icon

Call for an Appointment

Offering personalized care at more than 20 clinics across three cities and two states.

Call Now
Related Articles
Read article
Heart Health
Repair of an Ascending Aortic Aneurysm

An bulging, weakened part of the aorta is at risk for rupture and life-threatening bleeding. Surgery to fix it involves replacing the weak portion with an artificial graft.

Read article
Heart Health
Femoral Popliteal Bypass Surgery

Femoral popliteal bypass surgery is used to treat blocked femoral artery. The femoral artery is the largest artery in the thigh. It supplies oxygen-rich blood to the leg. Blockage is due to plaque buildup or atherosclerosis. Atherosclerosis in the leg arteries causes peripheral vascular disease. The same process causes heart disease and stroke.

Read article
Heart Health
Understanding Percutaneous Transcatheter Treatment of Deep Vein Thrombosis (DVT)

Percutaneous transcatheter treatment is a way to treat a deep vein thrombosis (DVT). DVT is a blood clot that forms in a large, deep vein. It happens most often in one of the veins of your legs. You may have pain, swelling, warmth, and redness from the DVT.

Read article
Heart Health
Having Percutaneous Transcatheter Treatment of Deep Vein Thrombosis (DVT)

Percutaneous transcatheter treatment is a way to treat a deep vein thrombosis (DVT). DVT is a blood clot that forms in a large, deep vein. It happens most often in one of the veins of your legs. You may have pain, swelling, warmth, and redness from the DVT.