NEFL and Bell's palsy: The NfL concentration [median (range)] was 120.5 pg/mL (58.1–205.4 pg/mL) in children with meningitis, 88.6 pg/mL (48.8–144.5 pg/mL) in Bell’s palsy, 103.9 pg/mL (60.1–210.8 pg/mL) in children with febrile infection, 97.1 pg/mL (60.1–124.6 pg/mL) in children with idiopathic intracranial hypertension, and 56 pg/mL (53.2–58.3 pg/mL) in children with complex febrile seizures (Figure 1).