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Telangiectasias, or spider veins, are small dilated blood vessels near the surface of the skin; usually they measure only a few millimeters. They can develop anywhere on the body but commonly on the face around the nose, cheeks, and chin. They can also develop on the legs, specifically on the upper thigh, below the knee joint, and around the ankles.
Additional recommended knowledge
Telangiectasias can result in naevus flammeus (port-wine stain), which is a flat birthmark on the head or neck that spontaneously regresses. A port-wine stain, if present, will grow proportionately with the child. There is a high association with Sturge-Weber syndrome, a nevus formation in the skin supplied by the trigeminal nerve and associated with glaucoma, meningeal angiomas, and mental retardation. Finally, spider telangiectasias are a radial array of tiny arterioles that commonly occur in pregnant women and in patients with hepatic cirrhosis. In men, they are related to high estrogen levels secondary to liver disease.
Because telangiectasias are vascular lesions, they blanch when tested with diascopy.
Telangiectasias may occur in a number of diseases:
The main factors that play a role in the development and continuity of spider veins include;
Heredity- Where family history plays a part in individual development.
Age - The development of spider veins may occur at any age but usually occurs between 18 and 35 years, and peaks between 50 and 60 years.
Gender – Females are affected approximately four to one to males.
Pregnancy – Pregnancy is a key factor contributing to the formation of varicose and spider veins. The most important factor is circulating hormones that weaken vein walls. There's also a significant increase in the blood volume during pregnancy, which tends to distend veins, causing valve dysfunction which leads to blood pooling in the veins. Moreover,later in pregnancy, the enlarged uterus can compress veins, causing higher vein pressure leading to dilated veins. Varicose veins that form during pregnancy may spontaneously improve or even disappear a few months after delivery.
Lifestyle/Occupation - Those who are involved with prolonged sitting or standing in their daily activities have an increased risk of developing varicose veins. Therefore, the weight of the blood continuously pressing against the closed valves causes them to fail, leading to vein distention.
The Lifestyle factors that can contribute to the development of varicose and spider veins entail:
Telangiectasias are often treated with laser or IPL therapy. There have been medication based treatments available for over 50 years. Laser therapy uses light beam that is pulsed onto the veins in order to seal them off, causing them to dissolve. These light-based treatment requires adequate heating of the veins. For optimal results, several laser treatments are usually necessary. A Sclerosant medication is injected into the diseased vein so it hardens and eventually shrinks away.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Telangiectasia". A list of authors is available in Wikipedia.