Postvaricella purpura fulminans with no evidence of disseminated intravascular coagulation (DIC) or protein S deficiency.

The mechanism of postvaricella purpura fulminans is thought to be due to development of antiprotein S antibodies. These antibodies lead to an acquired transient severe protein S deficiency which results in disseminated intravascular coagulation and microvascular thrombosis. Here a patient presented with postvaricella purpura fulminans, where no clinical or laboratory evidence of disseminated intravascular coagulation could be found and there was no deficiency of protein S.