Sclerotherapy effectively treats varicose and spider veins. It's often considered the treatment of choice for small varicose veins. Sclerotherapy involves injecting a solution directly into the vein. The sclerotherapy solution causes the vein to scar and collapse, forcing blood to reroute through healthier veins. The collapsed vein is reabsorbed into local tissue and eventually fades.

After sclerotherapy, treated veins tend to fade within a few weeks, although occasionally it may take up to a month to see the full results. In some instances, several sclerotherapy treatments may be needed.

Why it's done Risks How you prepare What you can expect Results

Sclerotherapy is often done for:

  • Cosmetic purposes — to improve the appearance of varicose and spider veins

The procedure also can improve related symptoms such as:

  • Aching
  • Swelling
  • Burning
  • Night cramps

If you're pregnant, doctors recommend waiting until after your delivery to have sclerotherapy done.

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