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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, or pyrexia, is a rise in internal body temperature to levels that are considered to be above normal. Average body temperature is about 98.6Â°F or 37Â°C, and temperatures above 100.4Â°F or 38Â°C are generally considered to be febrile.Body temperature is determined by the body's thermoregulatory set-point.The body increases this set-point in response to threats such as bacterial or viral infections.When this set-point rises, a fever occurs and the body perceives itself as suffering from hypothermia (colder than it should be). fever, or pyrexia, is a rise in internal body temperature to levels that are considered to be above normal. Average body temperature is about 98.6Â°F or 37Â°C, and temperatures above 100.4Â°F or 38Â°C are generally considered to be febrile.