Sign

Definition

A sign is an objective and measurable indication of disease observed by a healthcare professional. Examples include fever, swelling, and redness.

5 Must Know Facts For Your Next Test

1. Signs are different from symptoms, which are subjective experiences reported by the patient.
2. Common signs of infectious diseases include rashes, elevated temperature, and abnormal lab results.
3. Signs can be quantified using medical instruments or tests, such as blood pressure readings or imaging scans.
4. Healthcare professionals rely on signs to diagnose diseases accurately and monitor the progression or resolution of infections.
5. Some signs may be specific to certain pathogens, aiding in the identification of the causative agent.

Review Questions

• What distinguishes a sign from a symptom in the context of infectious diseases?
• Can you name three common signs that indicate an infection?
• Why are signs important for diagnosing infectious diseases?

Related terms

Symptom: A subjective experience of illness reported by the patient.

Pathogen: An organism that causes disease in its host.

Diagnosis: The process of identifying a disease based on signs, symptoms, and test results.