What causes a fast heart beat and fever?

Answer 1

Fever is the bodies attempt to raise the body temperature to deal with an infection by a pathogen ( bad germ or virus). At 101 degrees (by mouth temperature) your body's white blood cells perform best in killing the pathogens. Also at 101 degrees the germs are hindered in reproducing. Human pathogens survive best at 98.7 degrees. So to keep a mild fever helps you overcome disease. Most physicians would recommend over the counter medication like acetaminophen for temperature reduction to prevent the temperature from going over 102 degrees. Little children should be watched closely so that the temperature does not spike to a dangerous level.

Pulse, or heart beat rate, is the body delivering blood faster to the areas that need it. The heart reacts to hormones such as adrenalin, to stress, and to insufficient oxygen being received by cells. Some conditions which cause high heart rates are low red cell counts (anemia), constriction of important blood vessels, breathing problems, or increased metabolism (as in fever).