Does high fever cause encephalitis?

High fever may cause encephalitis, because high fever may be related to bacteria, viruses, fungi and other infections. If it enters the brain or meninges through the blood-brain barrier, it may cause encephalitis or meningitis. Patients with encephalitis normally show high fever, lack of energy, loss of appetite, severe headache, nausea, vomiting, blurred vision and other manifestations, which are more serious diseases. High fever does not necessarily cause encephalitis, showing symptoms of high fever should be timely medical treatment, if there are symptoms of upper respiratory tract infection, can do blood routine, C-reactive protein and chest X-ray examination, if there is diarrhea, defecation abnormalities and other manifestations, can do stool routine or abdominal fluoroscopy examination, determine the diagnosis and treatment. If the temperature exceeds 38.5 degrees, should be timely oral antipyretic or injection antipyretic needle.