A symptom can be defined as one of the characters of a disease. Meanwhile, sign is the definite indication of a specific disease. While signs are what a doctor sees, symptoms are what a patient experiences. Signs are the physical manifestation of injury, illness or disease, whereas symptoms can be described as what a patient experiences about the injury, illness or disease. When the patient notices symptoms, it is the physician or doctor who notices signsWhile symptoms are problems that a patient notices or feels, signs are whatever a physician can objectively detect or measure. Symptoms are what the patient reports, but which cannot be verified. Feeling tired, feeling dizzy and having pain are some of the symptoms, which cannot be verified. But signs on the other hand can be verified. Signs can be measured in a clinical setting. High or low blood pressure, rapid heart rate or fever, can be measured
For example, if a patient feels hot, this is a symptom. When a physician examines the patient, touches the patients skin and notes that it is warm and moist, this is a sign.
Breathlessness is a symptom (patients experience) while a fast heart rate is a sign the doctor can measure confirming the patients experience.
Nervousness is a something a patient may report, while trembling hands is a sign of nervousness that a doctor can measure.