ADEM	Acute disseminated encephalomyelitis
AE	Autoimmune encephalitis
AESD	Acute encephalopathy with biphasic seizures and late reduced diffusion
ANE	Acute necrotizing encephalopathy
ASFA	American Society for Apheresis
CNS	Central nervous system
CSF	Cerebrospinal fluid
GBS	Guillain–Barré syndrome
GCS	Glasgow Coma Scale
HIS	Health Information System
HSV-1	Herpes simplex virus type 1
IMV	Invasive mechanical ventilation
IQR	Interquartile range
ITES	Infection-triggered encephalopathy syndrome
IVIG	Intravenous immunoglobulin
MERS	Mild encephalitis/encephalopathy with a reversible splenial lesion
MOGAD	Myelin oligodendrocyte glycoprotein antibody-associated disease
MRI	Magnetic resonance imaging
NMDAR	N-methyl-D-aspartate receptor
OCB	Oligoclonal bands
OCEBM	Oxford Centre for Evidence-Based Medicine
PCR	Polymerase chain reaction
PCPC	Pediatric Cerebral Performance Category
PELOD-2	Pediatric Logistic Organ Dysfunction-2
PICU	Pediatric intensive care unit
PRISM III	Pediatric Risk of Mortality III
RTX	Rituximab
SARS-CoV-2	Severe acute respiratory syndrome coronavirus 2
TPE	Therapeutic plasma exchange
WBC	White blood cell