Susannah Cahalan's lifelong dream of being a reporter was put on hold after a series of hallucinations and seizures landed her in the hospital. After many misdiagnoses, a—seemingly simple—test revealed a rare autoimmune disease that explained her presumed psychosis.

"The question of where I was on the continuum of recovery was very painful… I didn't know if I'd ever be myself again."

Tune in to hear Susannah's relentless race against the clock in our latest episode.