“Is 99.9 a dangerous fever for a 6 year old?”

Not at all. Fevers are only dangerous once they hit 106 or 107. However a true fever of 100.4 or higher can be uncomfortable for a child, making them tired and dehydrated. Dehydration is the dangerous part and your child should be drinking a lot of fluids.

No it is not a dangerous temperature

First a few facts. A human temperature of 99.9 degrees Fahrenheit is a normal body temperature and is not considered a true fever. A true fever in medicine, for both children and adults, is considered to be 100.4 degrees F (38 degrees Celsius) or higher. So, a 6-year-old with a temperature of 99.9 is considered normalAlmost all fever, defined as a temperature of 100.4 F or higher, is not harmful to your child. High fevers in children, such as 104 and higher, are very concerning to parents and some medical personnel, but these fevers rarely if ever cause medical harm. They are uncomfortable, decrease ability to sleep, eat or drink, and make the patient feel awful. The real question in all fever is, why? What is causing the fever? This should be the goal of any health professional seeing a patient with fever. Determining the cause of the fever is the most important thing.
I hope this is helpful.

Albert G. Karam, MD

It is not considered a fever until temp is greater than 100.4. If she is acting normally do not medicate