Purpura fulminans following hump-nosed pit viper (Hypnale hypnale) envenoming: A rare complication of snakebites.

Hump-nosed pit vipers of the genus Hypnale are highly venomous and reputed for the commonest venomous snakebites in Sri Lanka. They frequently cause local manifestations and less commonly cause systemic effects such as acute kidney injury and coagulopathy. There is no antivenom currently available in Sri Lanka for their envenoming.