If you are interested in this topic, you can find a lot more that I write about regarding dissociative disorders on the international blog, Quora. It is a very controversial topic that has the mental health community divided. As more than 50% of therapists, Psychiatrists and Psychologists do not believe that Dissociative Identity Disorder is a real phenomenon. In fact, few mental health professional even have training in how to recognize dissociative disorders and no training whatsoever is given in graduate school on how to recognize, diagnose and treat dissociative disorders.
You can read more about this topic and my views on it here: https://www.quora.com/