Encephalitis is not usually misdiagnosed as a brain tumor when it is treated in a regular hospital. The difference between encephalitis and brain tumors is obvious, both in terms of symptoms and imaging, so the probability of misdiagnosing encephalitis as a brain tumor is extremely low. Encephalitis is an infectious disease caused by pathogens attacking the brain parenchyma, and patients often have symptoms such as fever, vomiting, convulsions, and impaired consciousness, etc. The diagnosis can be confirmed by the combination of patient’s symptoms and cerebrospinal fluid examination, and craniocerebral CT will not reveal space-occupying lesions in the imaging examination. Patients with brain tumors often have symptoms such as projectile vomiting due to increased intracranial pressure caused by the tumor’s pressure on the brain, and occupying lesions can be clearly seen on cranial CT. No matter what kind of disease you have, you need to go to a regular hospital to avoid the risk of being misdiagnosed.