Recovery after sclerotherapy day by day: what happens and when everything heals

Sclerotherapy is not surgery, but it is also not “inject and forget.” The first 24 hours after the session determine how the entire recovery period will go. In short: you leave the clinic wearing compression stockings, you cannot take them off for the first 48 hours, and after that there is a strict wearing schedule for several weeks. Below I will detail what happens day by day, what to expect, and what should be a reason for an urgent visit to the doctor.

First 24 hours: the most important time

Immediately after the procedure, the veins into which the sclerosant was injected must seal together. For this, the vessel walls need to come into contact—this is exactly what compression stockings achieve. The pressure they create prevents blood from refilling the treated vein and forces the walls to stick together.

During the first 24 hours, the stockings are not removed at all. Not at night, not “for five minutes to wash.” I understand this is inconvenient, especially in summer, but the first 24 hours set the tone for the entire treatment. If compression weakens during this time, the risk of recanalization (that is, the vein “unsealing” back) increases sharply.

In the first hours, you may feel a burning sensation or slight heat along the treated veins. This is a normal reaction to the sclerosant. A feeling of fullness may also appear—this is also expected. If the pain becomes sharp, throbbing, and the leg swells visibly, this is a reason to contact your doctor immediately.

Days 2–7: swelling, bruises, and first results

On the second day, you can remove the stockings for hygiene procedures, but you need to wear them almost constantly. Usually, I recommend patients take the stocking off only to wash, and then put it back on immediately. You also need to sleep in the stockings during this week.

What happens to your legs during this period:

• Swelling and lumps. This is normal. After sclerotherapy, the vein turns into a dense cord that can be felt under the skin. There is no need to be alarmed—this is fibrosis, that is, the replacement of the vein with connective tissue. Over time, the cord will resolve.
• Bruises and hematomas. The sclerosant gets not only into the vein but also into the surrounding tissues—hence the bruises. They can be bright, even alarming, but they are not dangerous. They go away in 1–3 weeks.
• Pigmentation. By the end of the first week, a brownish discoloration of the skin may appear along the treated veins. This is a deposit of hemosiderin—a breakdown product of hemoglobin. In most patients, pigmentation fades within 2–6 months, sometimes longer. It almost always disappears completely, but be patient.

During this week, you must not:

• lift heavy objects or exercise;
• take hot baths, go to a banya or sauna;
• sunbathe (including in a tanning bed);
• drink alcohol—it dilates blood vessels and interferes with sealing.

But you should walk. Not lie down, but walk—20–30 minutes several times a day. This improves venous return and reduces the risk of thrombosis.

Weeks 2–4: returning to activity

During this period, compression stockings are typically worn during the day and removed at night. The exact schedule is given by the doctor after an examination—it depends on which veins were treated and their diameter.

From the second week, you can gradually resume physical activity. Start with walking and swimming—these are the best types of exercise after sclerotherapy. Running, jumping, heavy squats—postpone until the end of the third or fourth week.

What may bother you during this period:

• Matting—the appearance of a fine network of blood vessels around the treatment area. This is not a complication but a reaction to inflammation. Most often, matting resolves on its own within a few months. If it does not, it can be corrected with additional sessions or CLaCS. But not earlier than 2–3 months after the initial procedure.
• Lumps along the vein. By the end of the second month, they usually begin to resolve. If the lump is painful, the skin over it turns red and becomes hot—this may be a sign of phlebitis. A doctor's examination is required.

By the way, if you had not sclerotherapy but EVLA (laser vein closure), recovery follows a similar scenario, but with one difference: after laser, the vein is removed entirely, so there are usually fewer lumps and less pigmentation, and compression is needed for the same duration. More about recovery after laser coagulation—in a separate article.

Months 1–3: when results are visible

By the end of the first month, you can already assess the intermediate result. The main veins treated with the sclerosant should be felt as dense cords or may no longer be detectable. Pigmentation, if any, begins to fade.

The final result is assessed no earlier than after 2–3 months. Until then, it is too early to draw conclusions—the vein may look “not fully sealed,” but this is often just tissue swelling that subsides later.

What you can and should do during this period:

• Return to full workouts. Strength training—with caution, gradually increasing the weight.
• Sunbathing is allowed, but in moderation. The skin in the treated areas is still sensitive, and ultraviolet radiation can provoke persistent pigmentation. It is better to cover the treated areas or use a high-SPF sunscreen.
• Banyas and saunas—after complete recovery. This is usually 4–6 weeks. Earlier is not recommended: heat dilates veins and can negate the effect of the procedure.

Which symptoms are a reason to see a doctor urgently

Most sensations after sclerotherapy are within normal limits. But there are symptoms for which you should not wait for a scheduled appointment:

• Sharp, increasing pain in the leg, not related to movement.
• Pronounced swelling of the lower leg or foot that does not subside by morning.
• Redness and local increase in skin temperature along the vein—this may be phlebitis.
• Shortness of breath, chest pain, cough—extremely rare but dangerous symptoms requiring immediate medical attention.
• Fever above 38°C without signs of a cold.

If any of these appear—do not write in a messenger, do not wait until morning. Call the clinic and come for an examination. Better to show up once too often than to miss a complication.

When a repeat procedure is needed

Sclerotherapy is rarely a single-session treatment. Especially when it comes to large veins or an extensive network of spider veins. Usually, 2–4 sessions are required with an interval of 3–4 weeks. This does not mean the first procedure was unsuccessful—it is simply physically impossible to treat all vessels in one session without exceeding the safe dose of sclerosant.

A repeat session is scheduled after an examination and, if necessary, a vein duplex ultrasound. There is no point in evaluating the result earlier than a month—the fibrosis process is still ongoing.

If, after a full course of sclerotherapy, large veins remain—perhaps miniphlebectomy or EVLA would be more suitable. These are not competing methods but complementary ones: laser closes large trunks, sclerotherapy finishes off tributaries and spider veins, and miniphlebectomy removes nodes that do not respond to other methods. Which option is right for you is decided during an in-person examination with ultrasound.

Practical recommendations for the entire recovery period

Let me summarize all of the above in a short checklist:

• Compression. First 48 hours—around the clock. After that—according to the doctor's schedule, usually 2–4 weeks during the day.
• Walking. Daily, at least 30 minutes. This is the best prevention of thrombosis.
• Water. Drink enough—thick blood passes through veins worse.
• Sports. Swimming and walking—from the 2nd week. Running and strength training—from the 3rd–4th week.
• Banya, sauna, hot baths. Only after 4–6 weeks.
• Sun. Moderate, with protective cream, for at least a month.
• Alcohol. Exclude for the first 2 weeks.

And most importantly: do not evaluate the result day by day. Sclerotherapy is a process that takes months. What you see a week after the procedure is not the final result but an intermediate stage. The final outcome is assessed after 2–3 months, and sometimes later.

If you have doubts about how your recovery is going—do not endure it and do not look for answers on the internet. Come for an examination. I see patients at M-Clinic in Tashkent; you can book an appointment by phone at +998 99 883-93-21. But even if you are being treated elsewhere—if you have alarming symptoms, be sure to see your doctor. When it comes to veins, it is better to be safe than sorry.

This article is for informational purposes only and does not replace a consultation with a qualified physician. If you are experiencing symptoms, please see a specialist.