Which symptom is commonly associated with exposure to nerve agents?

Muscle twitching is a hallmark symptom associated with exposure to nerve agents. Nerve agents disrupt normal neurotransmission, leading to overstimulation of muscles. This overstimulation can result in involuntary muscle contractions and twitching, particularly in areas such as the face, limbs, and abdomen.

Nerve agents inhibit the enzyme acetylcholinesterase, which is responsible for breaking down acetylcholine, a neurotransmitter that transmits signals between nerves and muscles. When this enzyme is inhibited, there is an accumulation of acetylcholine, causing continuous muscle activation, which manifests as twitching or spasms.

Understanding this mechanism is crucial for recognizing the symptoms of nerve agent exposure in emergency situations, allowing for timely and appropriate medical interventions.