Case Presentation: A 50-year-old female with a history of alcohol use disorder presented to the emergency department with a one-day history of unsteady gait, decreased lower extremity sensation, and slurred speech. She reported using 20 whippits (recreational inhaled nitrous oxide) daily for the preceding 3-4 weeks. She denied any dietary restrictions. Exam revealed 3+ patellar [...]

Case Presentation: A 32-year-old man with a remote history of alcohol and cocaine use disorders, depression and morbid obesity presented to hospital with numbness in the upper and lower extremities occurring over several months. His symptoms began with numbness and paresthesias in the hands and feet which was intermittent but became constant and spread proximally [...]