What is the disorder Celine Dion announced as 'stiff-person syndrome'?
“Stiff-person syndrome" is a rare autoimmune and neurological disorder.
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Celine Dion has stiff-person syndrome, a one-in-a-million diagnosis. These are its symptoms.
People with the syndrome experience rigidity in their torso and limbs, as well as muscle spasms that can occur at random or in response to certain stimuli.
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