The early symptoms of encephalitis in children are fever, headache, nausea, vomiting, etc. Some patients may experience poor mental health, fatigue, and loss of appetite. In a small percentage of children, the disease progresses rapidly and there is a risk of impaired consciousness, drowsiness, coma, and even convulsions within a short period of time. Children who are diagnosed with encephalitis need to undergo a lumbar puncture to clarify it based on the examination of cerebrospinal fluid. Because there are many causes of encephalitis, including viral, bacterial, fungal, and tuberculosis, it needs to be determined based on the results of the cerebrospinal fluid examination and targeted treatment is done.