|"Is this all real? Or has this been happening inside my head?"
The topic of this article is of a real-life subject that has been mentioned "in-universe" in a canon source. The Harry Potter Wiki is written from the perspective that all information presented in canon is true (e.g., Hogwarts really exists), and, as such, details contained in this article may differ from real world facts.
Lou Gehrig's disease, more commonly known as amyotrophic lateral sclerosis (ALS), was a disorder that caused progressive weakness and muscle atrophy, to the point where those affected were rendered completely immobile.
- Harry Potter and the Prisoner of Azkaban (film) (Mentioned on a book cover)