A sign is any objective evidence of a disease that can be observed or measured by an observer. If any doctor, family members and the individual experiencing the signs can identify these.
A symptom is a manifestation of disease apparent to the patient himself, while sign is a manifestation of disease that the physician perceives. The sign is objective evidence of disease or symptoms.
Objective evidence is physical sign such as temperature, pulse rate and rhythm, respiratory rate and character , temperature , posture, edema, gait. It is the evidence that's not subject to bias and quantifiable and able to independently confirmed .
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