Answer :
The objective, measurable evidence of disease evaluated by an observer is termed a sign.
A sign is any tangible proof that a disease exists, like a skin rash or a cough. These can be recognized by a doctor, family members, and the person exhibiting the symptoms.
The observer of the effect is the main distinction between signals and symptoms.
For instance, a rash could be both a symptom and a sign:
The rash is a symptom if the patient is aware of it.
The rash is an indication if the doctor, nurse, or someone else observes it besides the patient.
The rash may be categorized as both a sign and a symptom if the patient and the doctor both see it.
The body uses signs and symptoms to let a person know when something is wrong, regardless of who first detects that a system or body component is not operating regularly. Some signs and symptoms require a doctor's attention, while others may go away entirely on their own.
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