Health Tip: When Good Veins Go Bad

(HealthDayNews) -- Spider veins are formed by the dilation of a small group of blood vessels close to the surface of the skin, according to the American Society of Dermatologic Surgery.

Most often found on the face and legs, spider veins usually pose no health hazard, although they can cause a dull ache.

Varicose veins are enlarged blood vessels caused by a weakening in the vein's wall. They may be associated with a number of harmful conditions including phlebitis, an inflamed tender vein; thrombosis, a clot in the vein; and venous stasis ulcers, which are open sores that stem from inadequate tissue oxygen and fluid retention.

Sclerotherapy is considered the standard treatment for removing spider and some varicose leg veins. Performed on an outpatient basis by a dermatologic surgeon, it involves injecting a saline or chemical solution into the vein. This causes the vein to close up and become scar tissue that is absorbed by the body. The work of carrying the blood is shifted to other nearby vessels.

Sclerotherapy requires multiple treatment sessions. Post-treatment therapy includes wearing bandages and support hose for up to three weeks. Walking and moderate exercise may help speed recovery.

-- Anne Thompson