Annals of Indian Academy of Neurology
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CASE REPORT
Year : 2013  |  Volume : 16  |  Issue : 2  |  Page : 252-254

Clinical and radiological findings in chlorfenapyr poisoning


1 Department of General Medicine, Katuri Medical College, Guntur, Andhra Pradesh, India
2 Department of Radiology, Katuri Medical College, Guntur, Andhra Pradesh, India

Correspondence Address:
Vemuri Rama Tharaknath
3rd Lane, Syamala Nagar, Guntur, Andhra Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-2327.112486

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This is a case report of suicidal ingestion of chlorfenapyr, presenting with neurological complications after a latent period of more than a week, and rapidly progressing to death within days of symptoms. Chlorfenapyr is a moderately hazardous pesticide according to World Health Organization toxicity classification, and kills target organism by depriving it of energy through interference with oxidative phosphorylation at mitochondrial level. A pro-pesticide, chlorfenapyr takes time to convert to its active form and either this active form or a toxic metabolite causes delayed neurological symptoms. It causes significant neurotoxicity in rat models. This case report provides for the first time from India (second worldwide), clinical and "radiological evidence" (magnetic resonance imaging showing demyelinating/oedematous changes) of "chlorfenapyr neurotoxicity in humans." It also highlights the "latent period" between ingestion and onset of fatal manifestations. Earlier, similar case reports of human deaths with delayed onset neurological symptoms, due to chlorfenapyr poisoning have been reported, from Japan, Columbia, and Korea.


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