1.1K views · 11 reactions | Fasciculations, which are involuntary muscle twitching, are a common symptom of organophosphate (OP) poisoning, occurring due to excessive stimulation of nicotinic acetylcholine receptors at the neuromuscular junction, leading to rapid muscle depolarization and subsequent muscle weakness or paralysis; essentially, it's a sign of the body's overreaction to acetylcholine caused by the OP exposure. | Dr.GR-RahiMoon-Medical Specialist | Facebook