Neonicotinoid Poisoning Presenting As Methemoglobinemia – an Unusual Presentation

Neonicotinoids are considered a class of insecticides that are less toxic to human beings than organophosphates, carbamates, pyrethroids and organochlorides. Neonicotinoids are developed and launched in the market in the absence of direct human toxicity data. Human toxicity is extrapolated from animal studies, whose relevance is unclear.Despite its widespread use, very few cases have been reported. We report an unusual case of thiamethoxam poisoning-a 2nd generation neonicotinoid insecticide presenting as methemoglobinemia.