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Fever is the body's normal response to infection and other
conditions, both minor and serious. Most fevers help the body fight
The average normal body temperature is
98.6°F (37°C) orally. It can
change during the day from a low of
97.4°F (36.3°C) in the morning
to a high of 99.6°F (37.6°C) in
the late afternoon. Mild elevations—(99.8°F (37.7°C)— can be caused by too much clothing, a hot bath, or
Fever in a child is
present when a child's temperature is
100.4°F (38°C) or higher
Current as of:
May 22, 2015
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & H. Michael O'Connor, MD - Emergency Medicine
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