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.
VX is a chemical so potent that the United Nations classes it as a weapon of mass destruction. Malaysian police revealed Friday that Kim Jong Nam's body contained traces of VX, a colorless, odorless, tasteless liquid that's deadly in microscopic amounts. VX Nerve Agent: Kim Jong Nam Killed With a 'Weapon of Mass Destruction' 1:29.