Anti-N-methyl-D-aspartate receptor encephalitis: An observational and comparative study in Mexican children and adults.

Objective: To present a case series of encephalitis patients with anti-N-methyl-D-aspartate receptor antibodies, attending two neurological referral centers in a three-year period.

Methods: A retrospective, descriptive, comparative study included child and adult patients in two neurological populations, positive for antibodies against the NR1 and NR2 subunits of the glutamate (NMDA) receptor in serum and CSF, as determined during a three-year period.

Results: Sixty-six patients were included (40 children and 26 adults).