Differentiate between signs and symptoms.

Signs	Symptoms
It is evidence of disease that means it is observed by others.	It is evidence of diseases that only a person can feel.
Visible and observable by health care professionals	Experienced by the sufferer or patients who experiences symptoms
Can measure by checking temperature, taking X-rays, monitoring pulse rate, blood test, and more.	Cannot be measured as the person only feels them.
Cancer, AIDS, Asthma, Tuberculosis which health care professionals can specifically diagnose	Body pain, headache, itching, nausea, felt by the sufferer or patient only.