When multiple sessions are required
If the lesion is extensive, it is impossible to treat everything in one visit: there is a safe limit for the volume of sclerosant in one procedure, which cannot be exceeded. Therefore, treatment is planned in stages - zone by zone, with an interval of 3-4 weeks, which also allows you to evaluate the result of the previous session. The course may include 3–4 procedures. For very large veins, the doctor may suggest a combination: part of the veins is treated with sclerosant, part is removed with a miniphlebectomy - this way the result is achieved faster.
How does sclerotherapy work?
The sclerosant causes controlled damage to the inner lining of the vein. The vessel collapses, sticks together and within a few weeks turns into a thin cord that dissolves and becomes invisible.
The method does not require incisions or anesthesia, is performed on an outpatient basis and allows you to return to normal life immediately. However, it is not universal: large trunks with pronounced reverse blood flow are not treated with sclerotherapy - laser obliteration is needed there.
An important condition for success
Spider veins and small veins are often just the tip of the problem. If there is an incompetent feeding trunk underneath them, sclerosis of the superficial veins will give a temporary result: in a few months they will appear again. Therefore, duplex scanning before treatment is mandatory, and when reflux is detected, its cause is first eliminated.
What to expect after the procedure
- veins darken and become more noticeable in the first 2-3 weeks - this is normal
- slight bruising and compaction along the vein are possible
- the final result is assessed after 4–8 weeks
- Full effect usually requires 2–4 sessions