Reddit reviews From Axons to Identity: Neurological Explorations of the Nature of the Self (Norton Series on Interpersonal Neurobiology)

The Man Who Mistook His Wife For A Hat: And Other Clinical Tales is a fantastic series of real cases and a layman's explanation about what happened with people who had unusual mental situations. I really, really, really recommend it.

For example, people who have their perception of their body skewed, causing what is known as alien limb, where the limb you see attached to you does not seem to be your own, and sometimes tends to do things on its own because the feedback loop is broken. Those people tend to either amputate the limb or fall into extreme depression and end up taking their own life.

Edit: $11 bucks off amazon with prime for a paperback version. Linked to amazon smile version.

Edit 2: Another reccomendation by /u/pulgasvestidas link to post and Smile link to book

Another great book along these lines (probably somewhat more technical, but still quite accessible) is From Axons to Identity: Neurological Explorations of the Nature of the Self by Todd Feinberg.

The section about right-brain trauma is fascinating, it covers alien limb and other weird phenomena like thinking your dead husband's arm is attached to your body, and includes plenty of crazed dialogue from clinical records!! Highly recommended as well.