• BMJ case reports · Oct 2015

    Case Reports

    Amitraz: a mimicker of organophosphate poisoning.

    • Sahajal Dhooria, Digambar Behera, and Ritesh Agarwal.
    • Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
    • BMJ Case Rep. 2015 Oct 1; 2015.

    AbstractAmitraz is used as an ectoparasiticide for dogs and cattle. Human poisoning due to amitraz may be misdiagnosed as organophosphate/carbamate (OPC) toxicity, since amitraz poisoning shares several clinical features (miosis, bradycardia and hypotension) encountered with OPC poisoning. A 19-year-old man with an alleged history of suicidal ingestion of a pesticide presented with drowsiness and was found to have constricted pupils, hypotension and bradycardia. He was diagnosed as a case of OPC poisoning and was treated with atropine and pralidoxime prior to presentation to our centre. Absence of a hypersecretory state, and the presence of hyperglycaemia and hypothermia along with a normal serum cholinesterase level suggested an alternate possibility. Retrieval of the poison container confirmed the diagnosis of amitraz poisoning. The patient made a rapid recovery with supportive management. Clinician awareness is key to successful management of this poisoning, which carries a good prognosis. 2015 BMJ Publishing Group Ltd.

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