leukocytoclastic vasculitis

[lōō′kə-sī′tə-klăstĭk]
n.
  1. Acute cutaneous vasculitis that is characterized by purpura, especially of the legs, and by exudation of neutrophils and sometimes fibrin around dermal venules, with extravasation of red blood cells.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.