Sclerotherapy is a fairly safe procedure with few complications. Before the procedure, your doctor performs a physical exam and gathers your medical history. 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. Sclerotherapy is typically done in your doctor's office and doesn't require anesthesia. It generally takes less than an hour to complete.