What Causes Fever?

fever
Fever is defined as a temperature above 37 deg Celsius, and high fevers are under 103 deg Fahrenheit. Fever can be a symptom of an underlying disease or infection. It happens when your body's defense system is fighting against bacteria and viruses (they can't survive in a high temperature).

Fever is not considered medically significant until body temperature is above 100.4 F (38 C). Anything above normal but below 100.4 F (38 C) is considered a low-grade fever. Fever serves as one of the body's natural defenses against bacteria and viruses which cannot live at a higher temperature. For that reason, low fevers should normally go untreated, unless accompanied by troubling symptoms.

Signs and symptoms of fever includes: chill if the brain increase the body's thermostat. The body then shivers to raise the temperature. When the fever is gone the person starts sweating. Fever can be due to lots of conditions like infections, flu, pneumonia, arthritis, tumors or even cancer. A person with high fever (greater 106 Fahrenheit) is at risk of having dehydration, brain damage and it can even be a cause of death.

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