Which of the following is considered a symptom?

A symptom is a subjective indication of a disease or a condition that is experienced by the patient. Pain is classified as a symptom because it is a personal experience that cannot be measured or observed directly by healthcare professionals; instead, it is reported by the patient. It reflects the individual's feelings about their health and can vary greatly between different people.

In comparison, blood pressure, temperature, and heart rate are considered objective signs. These are measurable physiological parameters that can be assessed by healthcare providers using instruments or techniques. Unlike symptoms, which depend on a patient's personal experience, signs provide quantifiable data that are used to evaluate a patient's health status.