Encephalitis is an infectious disease of the central nervous system that causes patients to have recurrent fevers. The occurrence of encephalitis is related to the individual’s physical condition. If you have poor health, do not pay attention to your health, often stay up late on the Internet, irregular work and rest, irregular diet, and excessive fatigue, it can lead to a decrease in body resistance, increasing the probability of infection with pathogenic bacteria, so you are prone to suffer from encephalitis. The main clinical symptom of encephalitis is a severe headache and fever, with a temperature usually above 39°C. However, not all fevers and headaches are necessarily encephalitis, such as the common cold when the upper respiratory tract infection can also lead to fever and headache. However, encephalitis can lead to neck straightening, jet-like nausea and vomiting, and some patients will also have convulsive seizures, epilepsy, mental abnormalities, hemiplegia, unconsciousness, and other symptoms of neurological damage.