my gut says this is adequately tested in diagnosis notes with more of a stem format - edit: see notes here 1509043720635 and 1540249678868
Agree with Alex, plus NBME + usmle largely move away from buzzwords, and will just say 'muscle rigidity", of which there are a few differential diagnoses. A few other key patient features would need to be added to arrive a NMS. Anki IDs 1509043720635 and 1540249678868 cover more realistic ability to test diagnosis from key clinical presentations
I trust you guys to reject suggestions like these when 2 or more maintainers have commented as above