Severe coagulopathy after a bite from a 'harmless' snake (Rhabdophis subminiatus).

European physicians may occasionally be confronted with cases of snake venom poisoning. The increasing interest in snakes as pets has unfortunately resulted in the importation of a number of venomous snakes. We here report the third known case in the medical literature of a patient who was exposed to severe coagulopathy after being bitten by a 'harmless' ringsnake (Rhabdophis subminiatus). The prolonged bleeding diathesis and the complete depletion of fibrinogen observed in our patient are consistent with the presence of a factor X activator in the venom, as has been described in a murine model. In agreement with the two previous case reports, we found no evidence of severe organ damage, despite active intravascular coagulation.