Medical Health Encyclopedia

Polyarteritis nodosa


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Circulatory system
Circulatory system
Microscopic polyarteritis 2
Microscopic polyarteritis 2
Polyarteritis, microscopic on the shin
Polyarteritis, microscopic on the shin
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Definition

Polyarteritis nodosa is a serious blood vessel disease in which small and medium-sized arteries become swollen and damaged.


Alternative Names

Periarteritis nodosa


Causes, incidence, and risk factors

Polyarteritis nodosa is a disease of unknown cause that affects arteries, the blood vessels that carry oxygenated blood to organs and tissues. It occurs when certain immune cells attack the affected arteries.

More adults than children get this disease. It damages the tissues supplied by the affected arteries because the tissues aren't receiving the oxygen and nourishment they need.

People with active hepatitis B and C may develop this disease.



Review Date: 09/07/2010
Reviewed By: Mark James Borigini, MD, Associate Clinical Professor of Medicine, University of California, Irvine, Irvine, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).




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