Which of the following illustrates common signs of potential chemical exposure EMS should look for at a scene?

• A. Eye and skin irritation, coughing or dyspnea, unusual odor
• B. Headache only
• C. Abdominal pain unrelated to exposure
• D. Increased appetite and energy levels

Answer: (A)

In situations with a potential chemical exposure, EMS should look for signs that point to contact with hazardous agents: eye and skin irritation, coughing or difficulty breathing (dyspnea), and an unusual odor at the scene. Eye and skin irritation indicate mucous membrane and dermal contact with irritants or corrosives; coughing and dyspnea reflect inhalation exposure affecting the airways and lungs; an unusual odor can alert responders to the presence of a volatile chemical agent even before a source is identified. These signs together raise concern for a chemical hazard and prompt appropriate safety actions, decontamination, and protective measures. Headache alone is nonspecific and can have many causes; abdominal pain unrelated to exposure and increased appetite or energy levels are not typical indicators of chemical exposure at a scene.