Descending into madness

Imagine your own immune system started attacking your brain, causing you to act strangely, even crazed. That was a reality for Susannah Cahalan, a young New York City reporter. At 25 years old she was fighting a losing battle to a mysterious disease that neither she, nor any of her doctors had heard of – anti-NMDA receptor encephalitis. No one could diagnose her properly, until Dr. Souhel Najjar, chairman of neurology for Lenox Hill Hospital, intervened. In this episode of the HLN series, "Something's Killing Me," see how Dr. Najjar and Susannah are helping to raise awareness for this crippling condition and, as a result, offering hope to others tormented by its grip.

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