Frustrated when doctors couldn’t find her MRI results, a celebrated cellist with migraines decided to take matters into her own hands.

What Alisa Horn, found out was devastating — a diagnosis of early-stage multiple sclerosis.

When she found out was nearly as bad — right before taking the stage to perform “An American in Paris” on Broadway.

The sudden shock caused a panic attack that left Horn onstage and unable to play. And that frozen moment, interpreted by industry types as stage fright, has left her unable to get good gigs ever since.

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