As warmer weather approaches, many people notice thread veins and spider veins on their legs and sometimes arms. These fine networks of small blood vessels may become more visible when skin is on show in spring and summer.
While often harmless, they can affect confidence, especially when choosing shorts, skirts or swimwear. Understanding what they are, why they appear and how they can be improved helps you make an informed decision about treatment.
Here’s a clear guide to thread and spider veins, with a look at the most effective non-surgical option — microsclerotherapy — and what to expect from treatment at Vie Aesthetics.
Thread veins and spider veins are tiny dilated blood vessels that sit near the surface of the skin.
They often appear as:
Fine red, blue or purple lines
Web-like clusters
Branching patterns resembling small trees
These visible vessels are technically called telangiectasia and commonly occur on the legs and lower body.
They differ from larger varicose veins, which are swollen, raised and may cause discomfort or heaviness.
Thread and spider veins develop when very small veins dilate and blood pools close to the skin’s surface.
Common contributing factors include:
Genetics – family history increases likelihood
Hormonal changes – pregnancy or contraceptive use
Prolonged standing or sitting
Ageing – vein elasticity diminishes
Sun exposure – increases visibility
Weight fluctuations
In spring and summer, they can feel more obvious because skin is exposed and contrast against sun-lit skin makes them stand out.
Most thread veins are cosmetic, not medical. They rarely cause serious health problems.
However, you should get professional assessment if you experience:
Persistent leg pain
Swelling or heaviness
Changes in skin colour or rash
Rapid changes in vein pattern
These could indicate deeper vein issues that may need vascular referral.
You can reduce the risk of new thread veins forming through:
Regular walking and movement
Avoiding standing still for long periods
Maintaining a healthy weight
Using sun protection on exposed legs
Topical creams or self-massaging devices may improve the look temporarily, but they do not eliminate veins.
Only clinical treatments can visibly reduce their appearance.
Microsclerotherapy is widely regarded as the gold-standard treatment for thread veins and spider veins on the legs.
It involves injecting a specialised sclerosant solution directly into the unwanted vein using an ultra-fine needle. The solution irritates the lining of the vein, causing it to collapse and seal shut. Blood is naturally redirected through healthier surrounding vessels, and over time the treated vein is gradually reabsorbed by the body.
It is precise, targeted and designed specifically for small superficial veins.
At Vie Aesthetics, microsclerotherapy is performed in a regulated, clinical environment with full medical oversight.
We are CQC-registered, and all treatments are delivered by experienced medical practitioners who understand both aesthetic outcomes and vascular safety.
Before treatment, we:
Conduct a full consultation
Review your medical history
Assess the vein pattern and skin quality
Rule out underlying venous insufficiency
Create a personalised treatment plan
Not all visible veins are suitable for injection treatment. Proper assessment ensures the correct approach is chosen from the outset.
Our focus is not simply removing visible veins, but doing so safely and effectively, with realistic expectations and long-term skin health in mind.
Thread veins are usually cosmetic. However, in some cases they can indicate deeper venous issues.
At Vie Aesthetics, we ensure:
Safe patient selection
Appropriate referral if needed
Clear aftercare guidance
Ongoing support throughout treatment
Clinical governance and patient safety standards are central to how we practise.
A typical microsclerotherapy session involves:
Cleansing the treatment area
Injecting the sclerosant solution into visible veins
Light compression applied afterwards
The procedure usually takes 20–40 minutes depending on the area treated.
Most patients describe:
Mild stinging
Brief warmth
Minimal discomfort
You can usually walk immediately after treatment and resume normal daily activity.
Thread veins often require a course of treatments.
Most patients need:
2–4 sessions
Spaced several weeks apart
Veins may initially appear darker before gradually fading. Improvement develops over weeks as the body clears the treated vessels.
We always discuss realistic timelines during consultation so you can plan treatment appropriately — especially if preparing for holidays or summer events.
After treatment you may experience:
Mild redness
Temporary bruising
Slight swelling
These effects are typically short-lived.
We provide clear aftercare guidance, which may include:
Wearing compression stockings
Avoiding intense exercise briefly
Avoiding heat exposure
Most people return to normal routine the same day.
Microsclerotherapy does not remove veins instantly.
Instead:
Treated veins darken
Gradually fade over several weeks
Continue improving over 2–3 months
Once successfully treated, those specific veins do not return. However, new veins can develop over time due to genetics or hormonal factors.
Maintenance sessions may be recommended in the future.
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