The average body temperature is But "normal" body temperature varies from person to person. It also changes during the day, rising a bit after you eat or exercise. Body temperature is often higher in the afternoon than it is when you wake up in the morning. Fever means a body temperature of
When certain pathogens, such as bacteria and viruses, enter the body, the immune system signals the body to increase its temperature in an attempt to destroy them. However, severe illness can cause the mechanisms that maintain a normal body temperature to go awry, and the results can lead to extremely high temperatures that can be life-threatening. Doctors consider this temperature to be a high-grade fever. However, a fever is not the only symptom a person has when they are ill.
Share this on:. Defined as a temporary increase in body temperature, a fever is just a symptom, not an illness. But how do you know when a fever is dangerous? When is it time to see a doctor for a high temperature?
A fever is a temporary increase in your body temperature, often due to an illness. Having a fever is a sign that something out of the ordinary is going on in your body. For an adult, a fever may be uncomfortable, but usually isn't a cause for concern unless it reaches F For infants and toddlers, a slightly elevated temperature may indicate a serious infection. Fevers generally go away within a few days.