New York Post writer’s rare illness makes her go ‘mad’ for a month

Imagine being convinced you have bed bugs, that your significant other is cheating on you and that you have a disease because a man sneezed on the subway. Those are just a few things that Susannah Cahalan was paranoid about when she was dealing with a very rare neurological disease. She talks with Dr. Manny about her book, “Brain on Fire: My Month of Madness”