When nitrous oxide use is no laughing matter

Nina, a 21-year-old university student, attends your clinic worried that she may have MS.
Nina has noticed areas of “numbness” in her hands and feet over the past few months.
She initially thought her symptoms were related to the anxiety she was feeling as university exams approached, but her symptoms persisted after these were completed.
Nina is an international student, who was born in Hong Kong.