When assessing a casualty, what would a rescuer categorize as a symptom?

A symptom is defined as a manifestation of a condition that is indicated or experienced by the individual. In this context, a statement provided by the casualty regarding their pain fits this definition perfectly, as it is a subjective experience that the rescuer cannot directly observe but is communicated by the individual. Symptoms are crucial for assessing a casualty, as they provide insights into what the person is feeling and help guide the rescuer's response and treatment.

In contrast, a bruise is an observable physical sign rather than a symptom. A rapid pulse, although a vital sign that the rescuer can measure, is also classified as an observable phenomenon rather than a symptom. Furthermore, a medical diagnosis made by a doctor, while relevant, is an assessment made after an examination, and does not directly reflect the individual’s experience of their condition. Therefore, the distinction of a symptom being a personal, subjective experience communicated by the casualty underscores why the statement about pain is the correct answer.