Mystery illness made woman psychotic

By Dr. Drew staff

updated 10:58 PM EST, Wed December 19, 2012

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Mystery illness made woman psychotic

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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