%0 Case Reports %T Case 14-2024: A 30-Year-Old Woman with Back Pain, Leg Stiffness, and Falls. %A Doughty CT %A Schaefer PW %A Brizzi K %A Linnoila JJ %J N Engl J Med %V 390 %N 18 %D 2024 May 9 %M 38718362 %F 176.079 %R 10.1056/NEJMcpc2312733