Paraquat Poisoning: A Growing Homicidal Threat: Insights and Strategies

Abstract Paraquat is a widely used non-selective herbicide in Indian agriculture. It has gained popularity for its misuse in suicidal poisoning, primarily because it lacks an antidote, and ingestion often leads to death. When examining the historical trends of pesticide-related suicidal poisonings in India, there is a noticeable transition from endrin, organophosphates and rodenticides to the current prevalent use of paraquat. This review delves into globally reported cases of homicidal paraquat poisonings, which are sporadically reported in India as well, although not published in mainstream academia. Clinicians must remain vigilant in homicidal paraquat poisoning situations as there is often improper history at the time of presentation. Such cases typically present with some non-specific symptoms such as oral and pharyngeal burns and appear like any other typical acute gastroenteritis or a flu-like illness which ultimately leads to death as a result of pulmonary complications. At the same time, forensic pathologists need to be well versed in the characteristic autopsy findings and analytical toxicology considerations of paraquat-induced criminal poisoning, given the occasional incidents in India. The use of paraquat as a weapon in poisoning cases is a significant public health concern that underscores the need for a ban on paraquat in India.