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Signs and symptoms
Indications of a specific illness, including psychiatric / From Wikipedia, the free encyclopedia
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Signs and symptoms are the observed or detectable signs, and experienced symptoms of an illness, injury, or condition.
![A diagram of a human torso labelled with the most common symptoms of an acute HIV infection](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Symptoms_of_acute_HIV_infection.svg/640px-Symptoms_of_acute_HIV_infection.svg.png)
Signs are objective and externally observable; symptoms are a person's reported subjective experiences.[1] A sign for example may be a higher or lower temperature than normal, raised or lowered blood pressure or an abnormality showing on a medical scan. A symptom is something out of the ordinary that is experienced by an individual such as feeling feverish, a headache or other pains in the body.[2][3]