ELI5: Explain Like I'm 5

Dissociative identity disorder

Dissociative Identity Disorder (DID) is a disorder where a person has more than one identity inside of them. It's like having more than one person living inside your body. People with DID usually switch between different personalities or identities. It can be like having a different person living inside you that takes control, talks, and acts differently. It can be confusing and frightening, but with help, people can get better.