Case Presentation: A 32-year-old female was admitted after a seizure. Brain MRI was unremarkable and lumbar puncture yielded 133 white blood cells with 100% lymphocytes. Within a few days, refractory seizures occurred. Due to suspected autoimmune encephalitis, plasma exchange and high-dose steroids were started. Cerebral spinal fluid (CSF) studies returned with IgG antibody levels for [...]