stiff-person syndrome References stiff-person syndrome neurological disorder Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Céline Dion/ Death of husband, health diagnosis, and return to the stage…she had been diagnosed with stiff-person syndrome. The rare neurological disorder was causing spasms that affected her mobility and vocal cords. As she underwent treatment, Dion canceled or postponed various dates for her 2023 tour. Read More…she had been diagnosed with stiff-person syndrome. The rare neurological disorder was causing spasms that affected her mobility and vocal cords. As she underwent treatment, Dion canceled or postponed various dates for her 2023 tour. Read More