WebMD Symptom Checker helps you find the most common symptom combinations and medical conditions related to palpitations (fluttering in chest). Click on the combination that matches your symptoms to find the conditions that may cause these problems.
Nerve agents are a class of phosphorus-containing organic chemicals (organophosphates) that disrupt the mechanism by which nerves transfer messages to organs. The disruption is caused by blocking acetylcholinesterase, an enzyme that normally destroys acetylcholine, a neurotransmitter.
Story highlights. (CNN)VX, the nerve agent said by Malaysian police to have killled Kim Jong Nam, the half-brother of North Korea's leader Kim Jong Un, is a highly toxic substance that can lead to death within minutes. Considered a weapon of mass destruction, it is banned under the 1993 chemical weapons convention.