Spider veins during pregnancy are one of the most common vascular changes women experience — and one of the least discussed. If you’ve noticed small red, blue, or purple vessels appearing on your legs, ankles, or face, you haven’t done anything wrong.
Studies suggest that visible vein changes affect up to 70% of pregnant women, making them one of the most prevalent vascular concerns of pregnancy.
In most cases, spider veins are harmless. Understanding why they develop, what you can do to support healthy circulation, and when to seek assessment will help you manage symptoms and make informed decisions — at every stage.
Key Takeaways
- Spider veins affect a significant proportion of women during pregnancy.
- Increased blood volume, hormonal changes, and pressure from the growing uterus are the primary causes.
- Spider veins are usually harmless but can become more noticeable as pregnancy progresses.
- Medical-grade compression stockings remain one of the most evidence-supported ways to support healthy circulation during pregnancy.
- Active cosmetic vein treatment is generally not recommended during pregnancy.
- Persistent spider veins after pregnancy can often be treated effectively with vascular laser technology.
- VEIN + SKIN provides access to vascular expertise, including a dedicated vascular laboratory, specialist vascular sonographers, and bulk-billed vascular ultrasound with a valid GP referral through Northern Sydney Vascular.
Quick Answer
Spider veins during pregnancy develop because of increased blood volume, hormonal changes (particularly elevated progesterone), and compression of major pelvic veins by the growing uterus. They are extremely common and usually harmless. Medical-grade compression stockings, regular activity, and leg elevation can support healthy circulation during pregnancy.
If veins persist after delivery, effective treatment options are available. At VEIN + SKIN, located within North Shore Private Hospital in Sydney, we provide assessment and treatment of spider veins and vascular skin concerns using the Excel V+ medical-grade vascular laser. Where clinically indicated, vascular ultrasound can be arranged through Northern Sydney Vascular‘s dedicated vascular laboratory, with bulk-billed vascular ultrasound available with a valid GP referral. Specialist vascular surgeon Dr Igor Banzic (MD PhD FRACS FEBVS) is available on site when specialist vascular assessment is required.
Why Do Spider Veins Develop During Pregnancy?
Pregnancy places substantial demands on the venous system. Three physiological mechanisms are primarily responsible.
Increased Blood Volume
During pregnancy, the body produces up to 50% more blood to support the growing baby. The veins do not expand proportionally to match this increase. The additional pressure stretches vein walls and stresses the small one-way valves inside them that keep blood flowing toward the heart — a key mechanism behind both spider veins and varicose veins.
Hormonal Changes
Elevated progesterone causes the smooth muscle in blood vessel walls to relax, reducing their structural integrity and making them more susceptible to stretching and blood pooling. This hormonal effect is active from early pregnancy and continues throughout all three trimesters.
Pressure from the Growing Uterus
As the baby grows, the uterus increasingly compresses the inferior vena cava — the major vessel responsible for returning blood from the lower body to the heart. This compression reduces the efficiency of venous return, contributing to pooling, swelling, and visible vein development, most notably during the second and third trimesters.
Family History
Genetics are a significant determinant. If your mother or grandmother developed spider veins or varicose veins during pregnancy, your risk is substantially higher.
Common Pregnancy Vein Symptoms
Pregnancy-related vein changes can include:
- Spider veins
- Varicose veins
- Leg swelling
- Heavy or tired legs
- Aching or throbbing discomfort
- Restless legs
- Ankle swelling
- Visible veins behind the knees
- Increased facial capillaries and redness
These symptoms typically become more noticeable during the second and third trimesters, when blood volume and uterine pressure are at their highest.
Where Do Spider Veins Usually Appear During Pregnancy?
Spider veins during pregnancy most commonly develop on:
- Calves, ankles, thighs, and behind the knees
- The face — particularly around the nose and cheeks
- The chest and breasts, as blood volume rises
They are flat and web-like in appearance. Unlike varicose veins, they do not bulge above the skin surface.
Spider Veins vs Varicose Veins: What Is the Difference?
Both conditions share the same pregnancy-related causes but are clinically distinct.
Spider veins are small, flat, red, blue, or purple vessels visible at the skin surface. They are primarily a cosmetic concern.
Varicose veins are larger, raised, and rope-like. They bulge above the skin surface and are more likely to cause symptoms — aching, heaviness, throbbing, swelling, and leg fatigue. In some cases, varicose veins during pregnancy may indicate underlying venous insufficiency that warrants further investigation.
If you are unsure which type of vein change you have, a clinical assessment can provide clarity.
Can You Prevent Spider Veins During Pregnancy?
There is no guaranteed way to prevent spider veins during pregnancy. However, the following measures support healthy venous circulation and may reduce the severity of symptoms.
Wear Medical-Grade Compression Stockings
Medical-grade graduated compression stockings are one of the most effective conservative strategies for vein health during pregnancy. They improve blood return toward the heart, reduce leg swelling, minimise pooling, and reduce feelings of heaviness and fatigue.
Many women spend money on creams that claim to reduce vein appearance. While moisturisers may improve skin comfort, they do not address the underlying circulation changes that cause spider veins. Medical-grade compression remains a far more evidence-supported investment.
Stay Active
Regular walking and swimming stimulate venous return and reduce pressure in the leg veins.
Avoid Prolonged Sitting or Standing
Changing positions regularly prevents blood from pooling in the lower limbs.
Elevate Your Legs
Raising your legs above heart level for 15–30 minutes several times daily reduces swelling and discomfort.
Sleep on Your Left Side
Sleeping on the left side reduces pressure on the inferior vena cava and improves blood return from the legs.
Avoid Excessive Heat
Hot baths, spas, and saunas cause blood vessel dilation and may worsen vein symptoms during pregnancy.
Can Spider Veins Be Treated During Pregnancy?
Active cosmetic vein treatment is not recommended during pregnancy. Hormones, blood volume, and venous pressure are in continuous flux — treatment outcomes during this period are unpredictable and may not reflect the final appearance of veins after delivery.
The appropriate focus during pregnancy is symptom management, circulation support, and identifying any underlying vein issues that may require monitoring.
When Should You Seek Assessment During Pregnancy?
Spider veins themselves are generally harmless. However, certain symptoms warrant prompt medical review.
Seek assessment if you experience:
- Significant leg swelling, particularly if one leg is more swollen than the other
- Persistent aching, heaviness, or throbbing
- Pain, redness, or warmth over a vein
- Hardness along a vein’s path
- Sudden worsening of symptoms
- Skin changes around the ankles
- Calf pain accompanied by swelling or warmth
Pregnancy significantly increases the risk of deep vein thrombosis (DVT). Spider veins do not cause DVT, but symptoms consistent with a blood clot require prompt assessment.
Specialist Vascular Assessment — Available On Site
VEIN + SKIN operates within North Shore Private Hospital, St Leonards, alongside Northern Sydney Vascular — the specialist vascular and endovascular surgery practice of Dr Igor Banzic (MD PhD FRACS FEBVS).
Dr Igor Banzic is a Vascular and Endovascular Surgeon with over 22 years of specialist experience, international fellowships at the Mayo Clinic, Cleveland Clinic, Memorial Hermann Hospital, University of Pittsburgh, and University Clinic Zurich, and more than 50 peer-reviewed publications in vascular and endovascular surgery.
If a vein symptom raises clinical concern during your consultation, you can be assessed through Northern Sydney Vascular without needing to attend a separate facility or wait for an external referral.
Available on site at North Shore Private Hospital:
- Experienced vascular sonographers specialising exclusively in vascular imaging
- Dedicated vascular laboratory
- Comprehensive vascular ultrasound assessment
- On-site vascular surgeon (Dr Igor Banzic) when specialist review is required
- Bulk-billed vascular ultrasound with a valid GP referral
Will Pregnancy Spider Veins Disappear After Delivery?
Some spider veins improve naturally after pregnancy as hormone levels normalise and blood volume returns to baseline. However, not all veins resolve completely.
Veins that remain visible several months after delivery are unlikely to disappear without treatment. Each subsequent pregnancy also places additional cumulative strain on the venous system, meaning existing vein changes tend to become more pronounced over time.
Why Women Choose VEIN + SKIN for Spider Vein Assessment in Sydney
VEIN + SKIN is located within North Shore Private Hospital, St Leonards, providing patients with access to a level of vascular expertise not commonly available within cosmetic vein clinics.
Our integrated approach includes:
- Excel V+ medical-grade vascular laser technology
- Dedicated vascular ultrasound laboratory
- Specialist vascular sonographers
- Bulk-billed vascular ultrasound with a valid GP referral
- On-site access to specialist vascular assessment when clinically indicated
- Convenient North Shore Private Hospital location in Sydney
Where clinically indicated, patients can be assessed through Northern Sydney Vascular without needing to attend a separate facility, helping streamline investigation and management of underlying vein conditions.
Treatment After Pregnancy
Once pregnancy and breastfeeding are complete and your body has stabilised, treatment options can be considered for persistent spider veins.
At VEIN + SKIN, we use the Excel V+ by Cutera — one of the world’s leading medical-grade vascular laser platforms. The Excel V+ targets unwanted blood vessels with precision while minimising impact on surrounding skin. It is used to treat spider veins, facial veins, broken capillaries, rosacea-related redness, cherry angiomas, and other vascular skin concerns.
Treatment suitability is assessed individually. Where clinical uncertainty exists about the underlying vascular picture, a vascular ultrasound can be arranged through Northern Sydney Vascular‘s dedicated vascular laboratory. With a valid GP referral, these assessments may be bulk billed.
Frequently Asked Questions
Are spider veins during pregnancy dangerous?
Spider veins themselves are usually harmless. However, significant swelling, pain, redness, warmth, or asymmetric leg swelling should be assessed promptly to rule out deeper vascular concerns including DVT.
When do spider veins usually appear during pregnancy?
They most commonly develop during the second and third trimesters, when blood volume and venous pressure are at their highest. Some women notice them earlier.
Can I wear compression stockings throughout pregnancy?
Yes. Medical-grade graduated compression stockings are considered safe throughout pregnancy and are widely recommended by vascular specialists.
Will spider veins get worse with each pregnancy?
In many women, yes. Each pregnancy places additional cumulative stress on the venous system, making existing vein changes more likely to progress.
Do I need a referral to attend VEIN + SKIN?
No referral is required for a VEIN + SKIN laser consultation.
Can I get a vascular ultrasound through VEIN + SKIN?
Yes. If clinically indicated, vascular ultrasound can be arranged through Northern Sydney Vascular‘s dedicated on-site laboratory. With a valid GP referral, scans may be bulk billed.
Is a vascular surgeon available?
Yes. Dr Igor Banzic, Vascular and Endovascular Surgeon (MD PhD FRACS FEBVS), consults within the same North Shore Private Hospital suite and is available when specialist vascular assessment is required.
The Bottom Line
Spider veins during pregnancy are extremely common and result from normal physiological changes that support a growing baby.
Creams do not treat the underlying circulation changes responsible for pregnancy-related veins. Medical-grade compression stockings remain the most evidence-supported conservative measure during pregnancy.
If symptoms become concerning, VEIN + SKIN offers access to an experienced clinical environment — including a dedicated vascular laboratory, specialist vascular sonographers, bulk-billed vascular ultrasound with a valid GP referral, and on-site specialist assessment through Dr Igor Banzic, Vascular and Endovascular Surgeon (MD PhD FRACS FEBVS).
Book a Consultation
If pregnancy-related spider veins are causing concern, discomfort, or remain visible after delivery, a personalised assessment can help determine the most appropriate next step.
VEIN + SKIN offers assessment and treatment of spider veins, facial veins, broken capillaries, rosacea-related redness, cherry angiomas, and other vascular skin concerns using the Excel V+ medical-grade vascular laser.
Where clinically indicated, vascular ultrasound can be arranged through Northern Sydney Vascular‘s dedicated vascular laboratory. With a valid GP referral, scans may be bulk billed.
📍 Suite 5, Level 5, North Shore Private Hospital, St Leonards NSW 2065
📞 (02) 9439 8972
🌐 veinandskin.com.au
About VEIN + SKIN
VEIN + SKIN is a specialised vascular aesthetics practice located within North Shore Private Hospital, St Leonards, Sydney. We treat spider veins, facial veins, broken capillaries, rosacea, cherry angiomas, and other vascular skin concerns using the Excel V+ medical-grade vascular laser.
Our defining advantage is direct, integrated access to the vascular expertise of Northern Sydney Vascular — including a dedicated vascular laboratory, specialist vascular sonographers, bulk-billed vascular ultrasound assessments (with a valid GP referral), and on-site vascular surgeon Dr Igor Banzic (MD PhD FRACS FEBVS) when required.
📍 Suite 5, Level 5, North Shore Private Hospital, St Leonards NSW 2065
📞 (02) 9439 8972
🌐 veinandskin.com.au
Individual results may vary. Consultation required prior to treatment.