Written by a practicing critical care neurologist, this books includes a historical overview of the concepts of consciousness and unconsciousness, principles of neurologic examination of the comatose patient including instruction of a new coma scale - the 'FOUR Score', interpretation of neuroimaging and its role in daily practice and decision making, management in the emergency room and ICU and long-term supportive care and approach to communication with family members and end-of-life decisions. It also discusses landmark legal cases and ethical problems and a chapter is devoted to the public perception of coma.