Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Dissociation is a protective reaction to psychological trauma. However, people affected by dissociative disorders use this defense mechanism pathologically and involuntary. Dissociative disorders lead to alterations in the availability and accessibility of memory as well as disruption of identity – people suffering from these mental health conditions may not recall events that they have experienced while dissociated. Learn more about dissociative disorders, their causes, symptoms and treatment in this book.