Poisoning due to organophosphates (a class of organophosphorus compounds also known as phosphate esters, or OPEs). Organophosphates are used as insecticides, medications, and nerve agents. Symptoms include increased saliva and tear production, diarrhea, vomiting, small pupils, sweating, muscle tremors, and confusion. The disease is EFO_0010581 (organophosphate poisoning). Also known as: organophosphorus poisoning, organothiophosphate poisoning.