A very good account of physiologically triggered psychosis and dementia that illustrates the importance of good clinical interviewing to determine etiology and, therefore, appropriate treatment. As Cahalan points out, without a good differential diagnostic process, she probably would have wound up on a back ward and, had the illness continued to progress, probably would have died young. Cahalan does a good job of reconstructing her experiences. I appreciate her comments about the nature of memory. I'd have liked more medical data, but she outlines her situation coherently.My only criticism is that she has a throwaway line about [b:Sybil|67920|Sybil The Classic True Story of a Woman Possessed by Sixteen Personalities|Flora Rheta Schreiber|http://d.gr-assets.com/books/1344268259s/67920.jpg|2912372] that uncritically repeats Nathan's claim, which is far from well-substantiated and is contested. If Cahalan weren't a journalist I wouldn't mention this, but it was jarring in that context.