The symptoms of viral encephalitis mainly include: 1. common symptoms: headache, nausea, vomiting, fever, etc. 1. consciousness disorders: patients may appear to be poorly responsive, always want to sleep, or even severe shouting without promise and coma; 2. mental symptoms: patients appear to be irritable, including screaming and shouting, babbling, etc., and even aggressive behavior, or they may appear to be speechless, sitting still, not eating, and other inhibitory symptoms The epileptic patient may experience loss of consciousness, foaming at the mouth, twitching of the arms and legs and other symptoms. If the patient’s medical history is pursued, often before the onset of the disease, there may be symptoms of upper respiratory tract infection or gastroenteritis such as abdominal pain, diarrhea, and vomiting. Therefore, after this, if the patient develops persistent headache or fever, he or she needs to be alert and promptly visit the neurology department, where the doctor will decide whether to admit the patient for hospitalization. If patients develop more serious symptoms, including psychiatric symptoms of impaired consciousness or manifestations of epilepsy, they should be admitted to the hospital on an emergency basis for timely treatment to prevent life-threatening and delayed conditions or sequelae such as cognitive impairment and psychiatric symptoms of epilepsy, which can seriously affect the patient’s quality of life.