Auckland Vascular & Varicose Veins Specialist Surgeon

While arteries take oxygen rich blood to various parts of the body, veins are blood vessels that carry the blood back to the heart so it can be re-circulated. Because the veins in the legs have to pump blood back to the heart against gravity, they contain one-way valves, to prevent the blood from being pulled back down to the feet by gravity. There are two sets of veins in the legs; the main ones that lie in the middle of the leg (deep veins that transport ~90% of the venous blood) and ones that run close to the surface (superficial veins that transport ~10% of the blood). Blood is usually pumped from the superficial veins, through communicating veins (known as perforators) into the deep veins to be pumped back to the heart.

What are Varicose Veins?

Varicose veins are dilated, enlarged veins that are present usually in the subcutaneous (‘fat’) layer and are often tortuous in nature. They are generally greater than 4mm in diameter, with severe cases being 15mm or greater in size. Generally speaking, they are found in around 20-30% of the population, with women often being more affected than men.

Spider Veins are very small-dilated veins that are present within the multiples layers of skin. These are the most common and are present in a large percentage of the population in some degree or the other. These do not necessarily need treatment; in so much as they present more of a cosmetic problem rather than any significant health issues. Treatment is usually in the form of foam sclerotherapy, which is usually done in an office setting.

Signs and symptoms

The most common problems encountered by those who have varicose veins include:

Aching legs (ranging from mild to severe)
Swelling of the leg/s
Itchiness and dry skin (eczema)
Clots and inflammation in the veins (thrombophlebitis)
Skin discolouration (lipodematosclerosis)
Skin ulcers
 Varicose Veins

Varicose Veins

 Varicose & Spider Veins

Varicose & Spider Veins

What Causes Varicose Veins?

 A health vein (left) compared with a vein with abnormally functioning valves (right)

A health vein (left) compared with a vein with abnormally functioning valves (right)

Varicose veins most often occur when the valves within the veins stop functioning normally. This allows the blood, which should be pumped back to the heart, to pool in the superficial veins in the leg due to the effects of gravity. The subsequent abnormal reverse flow is known as venous reflux. If reflux is left to occur over a significant period of time, it will cause increased blood pressure in the veins, resulting in them becoming distended, swollen and varicose – a process that usually takes many years. There are a number of risk factors for developing the condition. These include:

Increasing age
Family history/s
Injury to the leg veins
Hormonal factors (e.g. puberty)
Occupation requiring prolonged standing
Gender (usually more common in women)


In the majority of cases, diagnosing varicose veins is usually relatively straightforward. They are often easily visible and the distribution and direction of the varicose veins will usually suggest which vein in the leg is most affected. What a physical examination cannot always confidently diagnose is where the highest point of reflux (abnormal functioning valve) occurs. Most of the time, it is located in the groin but occasionally it can be in the thigh or in the pelvis. As well as the distribution of veins, the leg is examined for signs of other tissue damage that can be cause by the condition, such as skin discolouration, ulceration and eczema. All varicose veins require an ultrasound to check the deep and superficial veins, get an exact diagnosis of the highest reflux point and provides a ‘map’ showing the surgeon exactly where the problems are in the veins. The scan also shows whether the veins contain clot or are blocked due to inflammation, both of which help determine the best treatment option.

Treatment Options

 Radiofrequeny Ablation

Radiofrequeny Ablation

 Laser therapy for Varicose Veins

Laser therapy for Varicose Veins

Most people with varicose veins experience some form of symptoms, with some degree of leg swelling and aching being the most common. However, severe cases can cause issues with skin discolouration, severe swelling, ulcers and problems with bleeding; in these circumstances, treatment is strongly indicated and suggested for medical reasons. Varicose veins can be treated in a number of ways – conservatively, surgery, endovenous laser or RFA therapy or ultrasound guided sclerotherapy. For minor veins that are asymptomatic, a trial of conservative treatment with compressions stockings and lifestyle modification is sometimes helpful. While compression stockings don’t treat the veins, they help with managing the symptoms.

Surgery most often involves a small incision in the groin to disconnect the troublesome vein from the main veins and removing the varicose vein. More information on varicose vein removal is available in the Varicose Vein Surgery section of this website.

Endovenous therapy, such as laser therapy (EVLT) or radiofrequency ablation (RFA), is usually done in an office setting with local anaesthesia. The procedure involves ablating the vein using heat. It involves no hospital stay and patients walk out of the clinic within an hour of starting the procedure. More information is available in the Endovenous Therapy section of this website.

Sclerotherapy involves using a foam solution into the vein in order to irritate the inside lining of the vein and cause it to occlude. The procedure is done under local anaesthetic and often under ultrasound guidance. It is not uncommon to require multiple treatments in order for the procedure to be most effective. More information is available in the Sclerotherapy section of this website.

As a specialist vascular and endovascular surgeon, Mr. Venu Bhamidi is one of the very few Vascular & Vein specialists who can offer the full complement of varicose vein removal techniques – from sclerotherapy through to surgery.

For more information or to book a consultation, please call the clinic today on 0800827237 or enquire via the form on our contact page.


While nothing can be done about several of the risk factors (age, gender, genetics), several strategies have been suggested to slow the progression of varicose veins. These include:

Avoiding being overweight
Wearing compression stockings regularly
When not walking, elevate your legs to reduce some of the swelling and discomfort
Be as active as possible – keeping the calf muscles active helps pump the blood back to the heart


 Compression Stockings

Compression Stockings

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