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Dr. Drew

Driven by current events, "Dr. Drew" on HLN focuses on the human - and human behavior - at the center of the story.

Mystery illness made woman psychotic

  • Woman writes book to help piece together her ‘lost month’
  • Illness explained her deteriorating mental state

What if an apparently normal, intelligent and productive person suddenly became psychotic, violent and unstable? It happened to one of Dr. Drew’s  guests, Susannah Cahalan, who tells her frightening story in the book "Brain on Fire: My Month of Madness".

Cahalan's illness is rare … but are there other illnesses that effect mental health?

Watch the segment in its entirety in the video player above.

Dr. Drew On Call airs Monday through Wednesday on HLN at 9 p.m. ET.  Follow the show on Facebook and Twitter @DrDrewHLN.

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