Sclerotherapy: Does It Hurt? What to Know Before the Treatment

Capillaries andVaricose Veins: The Treatment That Scares

Sclerotherapy is the gold standard treatment for capillaries (telangiectasias) and small varicose veins in the legs. It involves injecting a sclerosing solution directly into the vessel being treated, causing it to close and be reabsorbed.

If you have visible capillaries on your legs and are considering treatment, you are probably wondering: how much does it hurt?

The Short Answer

Less than you think. Sclerotherapy is generally well tolerated. Pain is described as mild in most cases.

But "mild" does not mean "zero." And for those who are afraid of needles or have to undergo many sessions, even mild discomfort repeated 20-30 times in one session becomes significant.

What You Feel

The injection:

The needle used is tiny (30-32G, thinner than an insulin needle). The injection is felt as a micro-pinch.

The sclerosing liquid:

Some patients feel a slight burning sensation as the solution enters the vessel. It lasts for a few seconds. It depends on the type of sclerosant used (foam burns less than pure liquid).

The amount of injections:

Here is the point: in one session, 10-40 injections can be performed. The single discomfort is minimal, but repeated many times, it becomes cumulative.

After the Treatment

Mild redness and swelling (hours)
Possible bruising (days)
Feeling of hardening along the treated vessel (weeks — normal)
Slight discomfort with elastic compression (stockings to be worn for 2-3 weeks)

How Many Sessions Are Needed

It depends on the extent of the capillaries:

Few isolated capillaries: 1-2 sessions
Widespread network on both legs: 4-8 sessions
Spaced 3-6 weeks apart

The long protocol is where the discomfort becomes more psychological than physical: knowing you have to return yet again.

How to Manage the Discomfort

Choose an experienced professional

A light touch makes all the difference. An experienced phlebologist is quicker, more precise, and uses the minimum amount of sclerosant needed.

Do not look

For many, the discomfort is more visual than physical. Watching the needle enter the skin of the legs repeatedly increases anxiety and therefore the perception of pain.

Distraction during the session

Many sessions last 20-30 minutes. A long time to spend staring at the ceiling and anticipating the next injection.

Virtual reality during sclerotherapy works particularly well because:

It eliminates the visual trigger (you do not see the injections on your legs)
It interrupts the anticipatory anxiety between one injection and the next
It makes the session feel shorter
For those who need 6-8 sessions, having something that makes each visit "not terrible" is the key to completing the treatment plan

For Those Who Are Afraid of Needles

Sclerotherapy is literally "many injections in the legs." For those with trypanophobia, it is a specific nightmare: not just one needle, but dozens in a single session.

Many people with visible capillaries postpone treatment for years for this reason — the same mechanism that leads needle-phobics to avoid blood draws. VR can be the solution that finally allows them to face it.

Sclerotherapy is not painful, but for those who need many sessions with many injections, comfort makes the difference. Clinics that offer Lemons in the Room during sclerotherapy eliminate the visual trigger and make each session feel shorter — the key to completing the cycle without giving up.