| AMPAR1/2 | a-amino-3-hydroxy-5-methylisoxazole-4-propionic acid receptor 1 and 2 |
| AMS | altered mental status |
| ANAs | anti-nuclear antibodies |
| ANCAs | antineutrophil cytoplasmic antibodies |
| anti-NAE | anti NH2-terminal-α-enolase |
| anti-Tg | antithyroglobulin antibody |
| anti-TPOs | thyroid peroxidase antibodies |
| CRP | C-reactive protein |
| CSF | cerebrospinal fluid |
| EEG | electroencephalography |
| fT4 | free thyroxine |
| GABAAR | gamma-aminobutyric acid A receptor |
| HE | Hashimoto’s encephalopathy |
| IgG4 | immunoglobulin G4 |
| IVIG | immunoglobulins |
| LGi1 | Leucine-rich glioma inactivated 1 |
| MRI | Magnetic Resonance Imaging |
| mRS | modified Rankin Scale |
| NAIM | nonvasculitis autoimmune inflammatory meningoencephalitis |
| NMDAR | N-methyl-D-aspartate receptor |
| SREAT | Steroid-responsive encephalopathy associated with autoimmune thyroiditis |
| TRH | thyrotropin-releasing hormone |
| TSH | Thyroid-stimulating hormone |