Introduction Anti-NMDA receptor encephalitis is one of the most commonly diagnosed autoimmune encephalitis among children. Children usually present symptoms including acute behavioral change, seizures, language dysfunction, and prominent dyskinesias after prodromal headache, fever, or a viral-like process (1). Brain MRI can be normal or nonspecific changes in cortical or subcortical regions (2). An ovarian teratoma might be detected in older girl patients (1).