Nitrous Oxide–Induced Vitamin B12 Deficiency With Delayed Neuropathy Diagnosis
Selamawit Gebrezghi preprint
A 32-year-old female with polysubstance use disorder presented with progressive neurologic symptoms, including paresthesia, gait instability, and eventual lower extremity paralysis. Initial evaluation, including magnetic resonance imaging and cerebrospinal fluid analysis, was non-diagnostic, contributing to delayed diagnosis. Subsequent laboratory testing revealed severe vitamin B12 deficiency...