purpura fulminans

noun

purpura ful·​mi·​nans -ˈfu̇l-mə-ˌnanz, -ˈfəl- 

: purpura of an often severe progressive form especially of children that is characterized by widespread necrosis of the skin and that occurs chiefly in conjunction with acute infection (as by meningococci) especially as a manifestation of disseminated intravascular coagulation and that in neonates is typically associated with deficiency of protein C or protein S