BSIP ESTIOT / SCIENCE PHOTO LIBRARY BSIP ESTIOT / SCIENCE PHOTO LIBRARY
Peripheral vascular disease. Illustration of blood circulation through a human leg with bursts of colour symbolising the pain caused by peripheral vascular disease. This condition results from inadequate blood flow through the leg. There are several causes, such as stenosis, or narrowing of the blood vessels. This narrowing is known as atherosclerosis when it is due to fatty plaque deposits in an artery. The pain may be also be due to the formation of a blood clot in a vein, which is known as deep vein thrombosis, or, if the vein is also inflamed, thrombophlebitis. Lack of blood produces pain and aching after walking, and can lead to leg ulcers or even gangrene.
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