The Myth: People with Dissociative Identity Disorder radically change their behavior and lose their memory of what has just been happening when they switch personalities.

Some people would say that DID itself is the myth, since it’s, suspiciously, much more commonly diagnosed in North America than anywhere else, but let’s assume for today that it does exist.

People with DID have anywhere from two to over a hundred different personalities that alternately take over their bodies. These alternate personalities (“alters”) usually, but not always, form due to childhood trauma. The alters don’t always cause huge, noticeable changes in appearance or behavior, so observers might not even notice their existence. Many people with DID (“multiples”) realize that various alters are present and know who those people are, even before therapy, which wouldn’t work very well if they had no memory of switching. It’s possible that one personality has no knowledge of what happened while one of their alters was in charge, causing a sense of amnesia, but they might be entirely aware of what is happening and just not actively involved. The group of alters can usually communicate to some degree, and might even work together to hide the fact that they are multiple. Some multiples prefer not to have therapy to choose one personality and stop switching, because they are perfectly fine living as a team.