Purpura fulminans
（重定向自Purpura gangrenosa）
Purpura fulminans (also known as "Purpura gangrenosa") is an acute, often fatal, thrombotic disorder which manifests as blood spots, bruising and discolouration of the skin resulting from coagulation in small blood vessels within the skin and rapidly leads to skin necrosis and disseminated intravascular coagulation.