| AE | autoimmune encephalitis |
| AK5 | adenylate kinase 5 |
| AMPAR | α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor |
| BBB | blood-brain barrier |
| BG | basal ganglia |
| CASPR2 | contactin-associated protein-like 2 |
| CJD | Creutzfeldt-Jakob disease |
| CNS | central nervous system |
| CRMP5 | collapsin response-mediator protein-5 |
| CSF | cerebrospinal fluid |
| DPPX/DPP6 | dipeptidyl peptidase-like protein 6 |
| EEG | electroencephalography |
| FDG-PET | fluorodeoxyglucose-positron emission tomography |
| FLAIR | fluid-attenuated inversion recovery |
| GABA-BR | γ-aminobutyric acid B receptor |
| GAD | glutamic acid decarboxylase |
| GlyR | glycine receptor |
| HIV | human immunodeficiency virus |
| HSV | herpes simplex virus |
| HHV6 | human herpesvirus 6 |
| ICI | immune checkpoint inhibitor |
| IL | interleukin |
| INF-γ | interferon-γ |
| LE | limbic encephalitis |
| LGI1 | leucine-rich, glioma inactivated 1 |
| mGluR5 | metabotropic glutamate receptor subtype 5 |
| MRI | magnetic resonance imaging |
| NK | natural killer |
| NMDAR | N-methyl-D-aspartate receptor |
| OCB | oligoclonal band |
| PNS | paraneoplastic syndrome |
| SLE | systemic lupus erythematosus |
| SOX1 | sex-determining region Y (SRY)-box 1 |
| SPS | stiff-person syndrome |
| VZV | varicella zoster virus |