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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.
A fever is defined by most doctors as a temperature of 100.4 degrees Fahrenheit (38 degrees Celsius) and higher when taken rectally. The body has several ways to maintain normal body temperature.The organs involved in helping with temperature regulation include the brain, skin, muscle, and blood vessels. fever is defined by most doctors as a temperature of 100.4 degrees Fahrenheit (38 degrees Celsius) and higher when taken rectally. The body has several ways to maintain normal body temperature. The organs involved in helping with temperature regulation include the brain, skin, muscle, and blood vessels.