What defines a symptom in medical terminology?

In medical terminology, a symptom is defined as a subjective experience reported by the patient. This means that symptoms are specific feelings or perceptions that an individual experiences, which may not be directly observable by others or measurable by medical professionals. Examples include pain, fatigue, nausea, and dizziness. Symptoms are essential for understanding a patient's condition because they provide insight into the individual's experience of their illness or injury.

The other options describe aspects of medical assessment that are more objective in nature. Objective findings, observable conditions, and critical vital sign measurements are typically assessed through physical examination or diagnostic tests and are important for providing a comprehensive view of a patient's health but aren't classified as symptoms. Understanding the distinction between symptoms (subjective) and signs (objective) helps healthcare providers in diagnosing and treating patients effectively.