Coagulopathy
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Haemorrhagic rash is a characteristic feature of both epidemic typhus and relapsing fever. DIC is a potential complication of septicaemia.
Envenomation by the black widow spider causes local reactions, neurotoxicity, sweating and muscle spasm. Coagulation defects are not well described.
Likewise with stings from a Portuguese-man-of-war, local reactions, cardiovascular toxicity and muscle spasms may occur but coagulopathy is not well described.
Coagulopathy may follow envenomation by African pit vipers.
