Diagnosis confirmed by detection of<unk> bodies to NR1 subunit of<unk> R in CSF or serum (typically send-out lab)
LP: CSF lymphocytic pleocytosis or oligoclonal bands (can be normal initially)
EEG: to rule out seizure with movement disorders
MRI brain: normal or transient FLAIR or contrast enhancing abnormalities in cortical or subcortical regions
Pelvic ultrasound or CT or MRI to evaluate for associated ovarian teratoma
Anti-NMDA receptor encephalitis
Viral encephalitis
CMV neurologic disease
Neuroleptic malignant syndrome
Limbic encephalitis
Primary psychiatric disorder
Primary CNS lymphoma
Hyper/hypothyroidism