Medical Encyclopedia

Venous insufficiency

The valves in the veins usually channel the flow of blood toward the heart. When these valves are damaged, blood leaks and pools in the legs and feet. Venous insufficiency is a condition in which the veins fail to return blood efficiently to the heart. This condition usually involves one or more veins. Symptoms include swelling of the legs and pain in the extremities such as a dull aching, heaviness, or cramping.

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