Definition: an acute form of vasculitis that may affect the skin only, but also may involve other organs, with a polymorphonuclear infiltrate in the walls of and surrounding small (dermal) vessels. Nuclear fragments are formed by karyorrhexis of the neutrophils.
Synonym(s): hypersensitivity vasculitis
See Also: leukocytoclastic vasculitis
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.