Purpura Fulminans in Pneumococcal Sepsis: Case Report and Review

Abstract

Purpura fulminans is classically defined by ecchymotic skin lesions, fever, and hypotension. The majority of cases occur in association with bacterial sepsis, and disseminated intravascular coagulation (DIC) is usually present. Prompted by our experience with a patient with pneumococcal sepsis and purpura fulminans in whom hypotension was never observed, we evaluated the important parameters of sepsis in reports of this syndrome. 42 additional cases of pneumococcal bacteremia and purpura fulminans were identified. Hypotension was present in only 51%. Although DIC was present in 85% of patients, hypofibrinogenemia was documented in only 26%. By contrast, both hypotension and hypofibrinogenemia are present in the vast majority of patients described with purpura fulminans in association with meningococcal sepsis. These data confirm that hypotension is not a necessary feature of the syndrome of purpura fulminans associated with pneumococcal sepsis and suggest further that qualitative or quantitative differences exist in the DIC cascade of pneumococcal vs meningococcal sepsis.