In this book, Susannah Cahalan recounts her wild journey, she calls her “month of madness,” that ended with her diagnosis of anti-NMDA receptor encephalitis . Susannah was a very active, talkative, outgoing 24-year old journalist when her symptoms began. As with many neurological conditions, the symptoms started as small, non-worrisome signs that can be chalked up to nothing serious. She noticed some numbness in her left arm, some personality changes (such as paranoia) that were abnormal for her, and an inability to focus at work. Susannah became paranoid that her apartment was infested with bed bugs and had an exterminator come and spray for them even though he told her he was no signs of them anywhere in her apartment. She confided in a coworker about another episode of paranoia, where she looked through her boyfriend’s emails, convinced that he was cheating on her. This was very abnormal for Susannah , but h...