The procedure is typically performed in the doctor’s office. It does not require anesthesia and usually takes 15 minutes to an hour to complete depending on the extent of the veins.
Patients lie on their back with their legs slightly elevated. After the treatment area is cleansed with alcohol, the doctor uses a fine needle to slowly insert a solution or foam into the vein. Some patients experience minor stinging or cramps when the needle is inserted. The injection solution or foam irritates the lining of the vein, causing it to swell shut and block the flow of blood.
Once the needle is withdrawn, the doctor will apply compression and massage the area to keep blood out of the injected vessel and disperse the solution. For large veins, a compression pad may be taped onto the site to keep the area compressed while your doctor moves on to the next vein. The number of injections depends on the number and size of veins being treated.