A fever of 38.5 degrees in a 12-year-old child with dental inflammation is usually referred to as an axillary temperature, 38.5 degrees is not considered a high fever, it is considered a moderate fever, and 39.1 degrees to 41 degrees is considered a high fever (i.e., hyperthermia). Children with fever are categorized into low fever, moderate fever, high fever, and ultra-high fever. Taking the axillary temperature as an example, low fever is 37.2~38℃, moderate fever is 38.1~39℃, high fever is 39.1~41℃, and ultra-high fever is greater than 41℃. So a 12-year-old child with a fever of 38.5 degrees can not be considered a high fever, belonging to the moderate fever. It should be noted that the fever of 12-year-old children with dental inflammation may be caused by dental inflammation, but it may not be. It is recommended to lower the temperature treatment at the same time, timely visit the hospital to clarify the cause of fever, and then targeted treatment.