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The vascular system refers to the collection of all blood vessels in the body. Vasculitis is the term used for a group of diseases characterized by the inflammation of and damage to the blood vessels or the blood vessel walls. Vasculitis (plural vasculitides) can be a primary disease or a secondary condition related to another underlying disease.
Different types of vasculitis have certain patterns of distribution that may affect particular organs, certain types of vessels, or specific vessel sizes. Vasculitis diseases affecting arteries are sometimes called arteritis, and those involving the veins are sometimes called venulitis. Overall, vasculitides (all types of vasculitis or vasculitic disorders) are uncommon conditions.
In general terms, blood vessels can be divided into arteries, veins, and capillaries.
Medically Reviewed by a Doctor on 7/29/2014
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