People with Dissociative Identity Disorder (DID), formerly known as multiple personality disorder, may sometimes use plural pronouns like "we," "us," and "our" when referring to themselves, particularly when they are acknowledging or communicating about their different identities or "alters." However, this is not always the case and varies greatly from person to person.
The use of plural pronouns is not a diagnostic feature of DID but is more of a personal choice that reflects how an individual with DID understands and communicates their experience. Some individuals with DID might use singular pronouns, referring to their alters in the third person, or switch pronouns depending on which alter is fronting (i.e., in control and interacting with the world) at a given time.
It's important to remember that DID is a complex and often misunderstood disorder. It often results from severe, chronic trauma experienced during childhood, and is characterized by the presence of two or more distinct identities or personality states that recurrently take control of the person's behavior, along with an inability to recall important personal information.
If you know someone who has DID, it's best to ask them how they prefer to be addressed. Being respectful and sensitive to their preferences can make a big difference in supporting their mental health. If you think you or someone else might have DID, please seek help from a mental health professional. They can provide a diagnosis and appropriate treatment options.