When the brain is damaged by high fever, the patient usually shows clinical signs of indifference, impaired consciousness, blurred speech, hallucinations, gibberish, emotional agitation, and in severe cases, drowsiness, coma, and other neurological disorders, and some patients may have epileptic-like manifestations such as twitching, spasms, and foaming at the mouth. When these symptoms occur, it also means that the brain nerve function has been damaged, such as encephalitis or meningitis, which are common in clinical practice. Therefore, when there is an unexplained fever, regardless of the temperature, it is recommended to seek medical attention in a timely manner to prevent this symptom by completing some necessary tests and then treating it under the guidance of a doctor.