I write about Dissociative Identity Disorder in part because I'm disturbed by the sheer volume of false and misleading information about DID. It bothers me that an overwhelming number of online resources are teeming with misconceptions so profound that the end result is a definition of the disorder that further shrouds it in mystery and controversy. Not to mention the fact that nobody seems able to explain it without relying on a misnomer, Multiple Personality Disorder, to do so. It took me a long time to wade through all the jargon and arrive at a definition of Dissociative Identity Disorder that accurately explains my experience of it.
Understanding Dissociative Identity Disorder depends somewhat on your grasp of the terminology, at least initially. Certainly discussing DID is easier if we're all using the same glossary of terms. Following is a list of words and phrases I tend to use when writing about Dissociative Identity Disorder, along with my definitions for each. If you have anything to add, or if my definitions don't quite match up with yours, I hope you'll share in the comments section.