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Facts About Varicose Veins and Schlerotherapy

Varicose veins arise from venous vessels, which are responsible for the return of "spent" blood. In contrast to arteries (blood transport from the heart to the organs and periphery), veins have a weak connective tissue and muscle sheath. They are, therefore, less resistant to pressure.


Varicose veins are very often caused by excessive pressure in the veins. Some of the most common causes of spider veins are:

Static loading of the legs when standing
Forcing the veins in the knee and pelvic area to work overtime due to extended amounts of sitting
Accumulating thrombosis in the leg and pelvic area
There are many other similar stresses, usually in conjunction with congenital connective tissue weakness and the development of dilated veins.

How varicosities form

Leg veins have venous valves every 8 inches. Veins are designed to transport the blood (in tandem) with the muscles of the heart (through the movement of muscles and joints). Veins are then compressed, which means the blood can only flow towards the heart (because of the non-return valves), meaning blood is pumped upwards.

If, due to an increased venous pressure or connective tissue weakness, the function of the valve, which retains the blood, is increased and the pressure on the next lower valve or vein increases. This leads to further stress and destruction (widening and lengthening) of the underlying veins and venous valves. This can progress to the point where the entire vein is eventually worn out, stagnating the flow of blood upwards or even reversing the direction downwards, thereby burdening the deep venous system with even more blood.

Evaluating symptoms

The most common clinical indicators are:

Heaviness in the legs
Visible appearance of varicose veins
In more advanced stages, the disease may cause venous ulcers to appear, in addition to a darkening of the skin, or bleeding.


Currently, there is no measure to help prevent the appearance of varicose veins. However, experts stress that a healthy lifestyle, including routine exercise, can help people avoid spider veins. It is also a good idea to watch your weight.

Do not wear clothes that are too tight. Wear comfortable shoes, eliminating the need for high heels and flat shoes. Everyone, including those who are at high-risk for varicose veins, should hydrate their skin daily.

Use sunscreen throughout the year, as it helps reduce blood “pooling.” If a person is at risk of developing varicose veins, the above tips can help them lower their risk. For information concerning vein treatments, contact a specialist.