Final answer:
Symptoms of disease are subjective and can only be felt by the patient. Unlike signs, symptoms cannot be clinically confirmed or objectively measured.
Step-by-step explanation:
Symptoms of disease are subjective and can only be felt by the patient. Unlike signs, symptoms cannot be clinically confirmed or objectively measured. Examples of symptoms include nausea, loss of appetite, and pain. These symptoms are important in diagnosing diseases, but they can be influenced by memory bias and are difficult to measure precisely.