Celine Dion says she 'could've died' from taking high dosages of Valium to manage Stiff Person Syndrome on tour

• Celine Dion opens up about her struggle with Stiff Person Syndrome in her new Amazon Prime documentary.
• Dion says she tried to perform through pain by increasing her medication dosages, especially Valium.
• "I don't want dramatic, but I could've died," Dion reveals. "Too many pills. The show must go on."

Celine Dion breaks down in tears in her new Amazon Prime documentary, "I Am: Celine Dion," while reflecting on her final concerts before she was diagnosed with Stiff Person Syndrome.