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The normal temperature inside your childâs body is usually around 37 degrees Celsius. Your child has a mild fever if their temperature is higher than 38 degrees Celsius. A high fever usually means more than 39 degrees Celsius.
Fever is one of the body's most effective ways of fighting infection. The average body temperature is 98.6Â° F (37Â°C). 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 100.4Â° F (38Â°C) or higher. An infection is the most common cause of fever. Examples include the flu, pneumonia, food poisoning, and bladder infection. Other conditions can also cause a fever.