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By Mayo Clinic staffVasculitis is an inflammation of your blood vessels. Vasculitis causes changes in the walls of your blood vessels, including thickening, weakening, narrowing and scarring. Vasculitis is also called angiitis and arteritis. Many types of vasculitis exist.
Vasculitis can be short term (acute) or long term (chronic) and can be so severe that the tissues and organs supplied by the affected vessels don't get enough blood. The shortage of blood can result in organ and tissue damage, even death.
Vasculitis can affect anyone, though some types of vasculitis are more common among certain groups. Some forms of vasculitis improve on their own, but others require treatment — often including taking medications for an extended period of time.
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