33yo F presents to ED with numbness & tingling in hands, feet for 10 days. History of recreational drug use, including nitrous oxide 'whippets.' Unremarkable Head CT was obtained.
Jones C, Verlare J,Ali R. Vitamin B12 deficiency in nitrous oxide abuse. American Osteopathic College of Radiology (AOCR) Case of the Week, 2022 Feb.