Céline Dion says she has 'stiff person syndrome.' Here's what that means
Canadian superstar Céline Dion's Instagram announcement that she has been diagnosed with stiff person syndrome is sparking questions about the rare and widely unknown disease.
The condition is a "neurological disorder with features of an autoimmune disease," according to the National Institute of Neurological Disorders and Stroke in the U.S.
The name doesn't do justice to the pain and life-changing symptoms the syndrome causes, said Tara Zier, founder of the Stiff Person Syndrome Research Foundation.