Spider Veins Causes, Symptoms & Treatment

Last updated on August 15, 2025

Spider veins may be small in appearance, but they can have a big impact on your confidence. While often considered cosmetic, they may also signal underlying vein issues—so it’s important to understand what spider veins are, what causes spider veins, and when it’s time to seek treatment.

At Vein Doctors Sydney, we provide effective, low-discomfort treatments to help reduce or remove spider veins. Whether you’re wondering what spider veins are or are actively looking for how to get rid of spider veins, this guide covers the essentials.

What Are Spider Veins?

Spider veins (medically known as telangiectasias) are small, damaged or dilated blood vessels that appear just beneath the surface of the skin. They commonly develop on the legs, thighs, ankles, or face, and are typically red, blue, or purple in colour. These veins are named for their web-like appearance, often resembling fine lines, branching trees, or clusters.

Unlike varicose veins, spider veins are not usually raised, bulging, or painful, but their prominent visibility can cause self-consciousness or cosmetic concern.

In some cases, spider veins may signal increased pressure in the venous system, especially when they spread or worsen over time. While not dangerous in most cases, they may occasionally be associated with symptoms like leg fatigue or mild discomfort.

What Causes Spider Veins?

Spider veins develop when tiny valves within the veins stop functioning properly. When this happens, blood may pool or flow backward, causing the small veins to dilate and become more visible. Several underlying factors contribute to this process, and many of them are unavoidable.

Common causes include:

Genetics: A family history of spider veins or varicose veins significantly increases your risk.

Hormonal changes: Events like puberty, pregnancy, menopause, or hormonal contraception can weaken vein walls.

Prolonged standing or sitting: Occupations or lifestyles that require long periods of standing or sedentary behaviour can increase venous pressure, particularly in the legs.

Ageing: As we grow older, our veins naturally lose strength and elasticity, making them more prone to visible damage.

Sun exposure: Overexposure to ultraviolet (UV) light—especially on the face—can break down blood vessels and contribute to spider veins.

Injury or trauma: Skin trauma, even minor bruising, can sometimes lead to the development of localised spider veins.

Obesity or excess weight: Added pressure on the legs can contribute to venous dysfunction and the formation of spider veins.

How to Get Rid of Spider Veins | What Causes Spider Veins | What Are Spider Veins

Some symptoms of spider veins include fine red, purple or blue lines along with a mild burning or tingling sensation.

Spider Veins Symptoms

While spider veins are mostly cosmetic, they can sometimes come with mild symptoms, particularly when affecting the lower legs. These symptoms tend to worsen after long periods of standing or in warm weather due to increased venous pressure.

Symptoms may include:

  • Fine red, purple, or blue lines on the legs, face, or ankles
  • A mild burning, tingling, or throbbing sensation in the affected area
  • Itching or a feeling of warmth around the visible veins
  • Mild swelling in the ankles or lower legs
  • A sense of heaviness, restlessness, or fatigue in the legs, especially at the end of the day

These symptoms are usually not severe but can become more noticeable over time. If discomfort increases or other symptoms develop—like skin changes or deeper swelling—it’s important to consult a vein specialist.

When to Worry About Spider Veins

Spider veins are typically harmless, but in some cases, they may signal a more serious venous condition such as chronic venous insufficiency. You should speak to a vein specialist if:

  • The veins become increasingly painful, swollen, or warm to the touch
  • You develop skin discolouration or ulcers near the veins
  • Your legs feel heavy, restless, or tired often—especially at night
  • The appearance of veins worsens suddenly or spreads rapidly

Early diagnosis can help rule out deeper issues and determine the best treatment path.

How to Get Rid of Spider Veins: Micro-Sclerotherapy in Sydney

At Vein Doctors Sydney, we offer micro-sclerotherapy, a highly effective, low-discomfort treatment for managing spider veins.

What is Micro-Sclerotherapy?

Micro-sclerotherapy involves injecting a small amount of a medical-grade solution into the affected veins using a very fine needle. This solution causes the vein to collapse and eventually be reabsorbed by the body, making it fade from view over time.

What to Expect from Treatment:

Minimally invasive: Most patients experience only brief, mild discomfort during the procedure.

Short downtime: You can return to most normal activities soon after treatment.

Post-treatment care: Compression stockings are recommended for a few days to aid healing and improve results.

Gradual results: Treated spider veins typically begin to fade within a few weeks.

The number of sessions required depends on the size, number, and location of the spider veins. Our team will assess your condition and tailor a treatment plan to suit your individual needs.

There are additional treatment options that may be suitable depending on the location and severity of the veins:

  • Radiofrequency Ablation (RFA): While more commonly used for larger veins, in certain cases, RFA can be adapted for smaller vein treatment, particularly when spider veins coexist with deeper vein issues.
  • Lifestyle Changes & Prevention: While not a treatment in itself, elevating the legs, wearing compression stockings, staying active, and avoiding long periods of sitting or standing can help reduce the appearance of spider veins and prevent new ones from forming.

How to Book an Appointment

At Vein Doctors Sydney, we are committed to providing personalised and compassionate care for patients seeking spider vein solutions. For more information on our services or to schedule a consultation at our clinic, please contact our friendly staff by either calling us on (02) 9023 9970, via our online form or by sending us an email.

Frequently Asked Questions

Spider veins are small, visible veins that appear red, purple, or blue. They often form a web-like pattern and are most common on the thighs, calves, ankles, or face. They may be flat or slightly raised and can occur in clusters or fine lines.

Spider veins don’t usually go away on their own, but they can be treated effectively. While you can’t “reverse” them naturally, treatments like micro-sclerotherapy can help fade or eliminate them. Preventive steps—like wearing compression stockings or avoiding prolonged standing—can also reduce the risk of new spider veins forming.

Factors like prolonged standing, pregnancy, ageing, and sun exposure can cause spider veins to worsen. Increased pressure in the legs and hormonal fluctuations may also lead to more visible or widespread spider veins over time.

Most spider veins are harmless and cosmetic, but in some cases, they may indicate underlying vein issues. If you experience symptoms like swelling, leg fatigue, or skin changes, it’s worth getting checked by a vein specialist.

Results from a spider vein treatment such as micro-sclerotherapy are gradual. Most patients begin to see improvement within a few weeks, with full results typically visible after several sessions, depending on the extent of the veins.

This information is not intended to be used for diagnosis or treatment. It is aimed at presenting a perspective only and is not a substitute for a prescription. Anyone experiencing a medical condition should consult their doctor.

About The Author

Picture of Dr Ryan McConnell

Dr Ryan McConnell

Dr McConnell is an Australian-trained endovascular specialist and interventional neuroradiologist. He has extensive experience in both diagnostic and procedural ultrasound and performs over 500 endovascular procedures each year.

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