Is the child fever 40 degrees serious?

Fever 40 degrees is more serious, this is a high fever. Fever is generally caused by bacteria, viral infection, the presence of mycoplasma, chlamydia infection will also cause this symptom. Suggestion: you need to let the child oral ibuprofen and other cooling drugs to control body temperature. You can also give the child paste antipyretic paste, through ice for physical cooling.