Sclerotherapy is one of the most widely used thread veins treatments for the legs, and it can be a good fit if you have fine red, blue or purple veins, you are in good general health and you can wear compression stockings afterwards. It is not the right first step for bulging, aching varicose veins, which should be checked by your GP. Suitability is confirmed at consultation.
Thread veins, spider veins or varicose veins?
People use these terms in different ways, so it helps to know what you are looking at before choosing a treatment.
| Type | What it looks like | Usual next step |
|---|---|---|
| Thread veins (also called spider veins) | Very fine red, blue or purple lines, sometimes in a web or starburst pattern, flat to the skin | Cosmetic treatment such as microsclerotherapy may be suitable |
| Reticular veins | Slightly larger, blue-green veins visible under the skin, often feeding thread veins | Often assessed and treated alongside thread veins |
| Varicose veins | Raised, twisted or bulging veins, which may ache, throb or cause heavy legs | See your GP first, as you may need a vascular assessment |
Thread veins are very common and for most people are a cosmetic concern rather than a medical one. They tend to appear on the thighs, calves and around the ankles.
Why thread veins appear
Thread veins form when tiny veins near the surface widen and become visible. Common contributing factors include:
- family history, which is one of the strongest influences
- hormonal changes, including pregnancy and menopause
- jobs or routines that involve long periods of standing
- getting older, as vein walls and valves change
- carrying extra weight, which increases pressure in the leg veins
Because many of these factors are ongoing, new thread veins can appear over time even after successful treatment.
How microsclerotherapy works
Microsclerotherapy, often searched for simply as sclerotherapy, uses a very fine needle to inject a specialised solution into the visible vein. The solution irritates the inner lining of the vein so that it closes and collapses. Over the following weeks and months, your body gradually absorbs the treated vein and blood is redirected through healthier, deeper veins.
At our clinic, most sclerotherapy sessions take between 20 and 45 minutes depending on the area and how many veins are treated. Most people describe a small pinprick with each injection and return to normal daily activities shortly afterwards. Improvement often becomes visible within several weeks, with full results developing over several months. You can read more about the treatment on our sclerotherapy treatment in Liverpool page. Prices are confirmed at consultation, once the number and extent of veins have been assessed.
Is sclerotherapy right for you?
You may be a good candidate if you:
- have visible thread or spider veins on your legs
- are in good general health
- are happy to wear compression stockings for the period advised
- understand that more than one session may be needed
Treatment may not be suitable if you:
- are pregnant or breastfeeding
- have a blood clotting disorder or a history of blood clots
- have certain circulation or vascular conditions
- are unable to wear compression stockings after treatment
- are currently unwell, immobile or recovering from recent surgery
Always mention any medicines you take, including hormonal contraception or HRT, as these are relevant to your safety assessment.
When to see your GP first
Some leg vein symptoms need a medical opinion rather than cosmetic treatment. Speak to your GP if you notice:
- bulging veins with aching, throbbing, heaviness or swelling
- itching, darkening or hardening of the skin around the ankles
- a sore or ulcer on the lower leg that is slow to heal
- a vein that bleeds
- a red, hot, hard and painful vein
If one leg becomes painful, swollen and warm, particularly the calf, seek urgent medical advice, as this can be a sign of a blood clot.
What happens at your consultation
Your appointment starts with questions about your health, medicines, pregnancies, any history of clots and any symptoms in your legs. Your legs are then examined standing up, as veins are easier to see that way. If anything suggests a deeper vein problem, you will be advised to see your GP before any cosmetic treatment is considered.
If sclerotherapy is suitable, we explain how many sessions may be needed, the likely cost, the side effects and how to look after your legs afterwards. It is a good moment to ask about compression stockings, time off exercise and any holidays or events you have coming up, so treatment can be timed around them.
What results to expect
Many people see a clear reduction in the visibility of treated veins, but results vary. The number of sessions depends on how many veins you have and how they respond, so a personalised plan is recommended at consultation. Temporary redness, bruising and mild swelling are common. Some people develop brown staining along a treated vein or a blush of very fine new vessels nearby, and these usually fade over time.
Good aftercare plays a large part in your result. Our sclerotherapy aftercare guide explains compression, exercise and what is normal during healing. If you have more than one skin concern, a skin consultation and skin scan can help you plan treatments in a sensible order.
Frequently asked questions
Can thread veins on the face be treated with sclerotherapy?
Our sclerotherapy treatment focuses on the legs. Facial redness and visible facial vessels are assessed separately, so mention them at consultation.
Will treated veins come back?
Treated veins generally fade for good, but new ones can develop over time because of genetics and lifestyle.
Is microsclerotherapy painful?
Most people describe it as mildly uncomfortable, with a small pinprick feeling during each injection.
Is there a best time of year to have it?
Many people choose autumn or winter, as wearing compression stockings and keeping treated skin out of the sun is easier when it is cooler.
Book a consultation in South Liverpool
If you would like to find out whether your thread veins are suitable for treatment, visit us at Business First Centre, Goodlass Road (L24). Book a consultation online or call 0151 804 4207.
This guide is general information and not a substitute for a personal consultation. Suitability for any treatment is assessed individually.
