etiopathogenic references are cited and the dermatological literature pointing out especially the cutaneous lesions with their clinical characteristics : ecchymoses which usually evolve to necrosis , bullae , petechiae , hematomas , cyanosis and bleeding at injection sites , and histological : fibrinous thrombosis of the vessels of the dermis , with hemorrhages , necrosis and dermoepidermic bullae , with slight or no inflammation . in some of these cases the dermatological lesions antedated the characteristic laboratory data .
C0013491
ecchymoses
C0019080
hemorrhages