How long does sclerotherapy take to work for spider veins?

The injected solution irritates the inside of a targeted vein, causing it to close so blood can be redirected through healthier vessels. Treated veins may look darker, redder, or more noticeable before they fade. Small veins often respond differently from larger ones, and several sessions may be discussed when a broad area or multiple vein groups are involved.

Your result can be influenced by vein size, location, circulation, the number of vessels treated, and whether new spider veins develop later. A review helps your clinician decide whether the response is progressing as expected.

Walk as instructed after treatment and follow advice about compression garments, bathing, exercise, and sun exposure. Do not massage the area or apply products that were not recommended. Keep review appointments, especially if you notice a tender cord, persistent staining, or veins that remain prominent.

Contact the treating clinic if swelling, redness, pain, or skin changes are worsening or spreading. Get urgent help for sudden shortness of breath, chest pain, coughing blood, or marked one-sided leg swelling. These symptoms need prompt assessment and should not be attributed to normal cosmetic healing.

Ask which veins are being treated, how compression should be used, when exercise can restart, and how persistent or newly visible vessels will be assessed.