Which of the following best describes a "sign" in medical terms?

In medical terminology, a "sign" is defined as an observable indicator of a condition. This means that signs are objective findings that can be detected and measured by someone other than the patient, such as a healthcare provider. For instance, abnormal heart rates, skin rashes, swelling, and elevated blood pressure are all examples of signs that can be observed during a medical examination.

This contrasts with subjective feelings, perceived sensations, or emotions experienced by the patient, such as pain or discomfort, which are termed symptoms. Signs provide critical information during assessments and assist healthcare professionals in making clinical decisions. Recognizing the difference between signs and symptoms is essential for accurate diagnostics and treatment.