The concept of Dissociative Identity Disorder (DID) is specifically characterized by the presence of two or more distinct personality states, commonly referred to as "alters" or "alternate identities." These distinct identities control an individual's behavior, thoughts, emotions, and memories. The presence of these alters is a defining feature of DID.
So, by definition, if there are no distinct alters or alternate identities in an individual, they would not meet the criteria for a diagnosis of Dissociative Identity Disorder. Instead, they may be experiencing other dissociative or psychological phenomena that require evaluation and diagnosis by mental health professionals.
It's essential to recognize that dissociative experiences can vary widely and exist on a continuum. Not everyone with dissociative symptoms will meet the criteria for DID. Some people may experience other dissociative disorders, such as Dissociative Amnesia or Depersonalization/Derealization Disorder, which have different characteristics and criteria for diagnosis.
If someone is experiencing distressing dissociative symptoms or concerns about their mental health, they should seek evaluation and support from a qualified mental health professional. Proper assessment and diagnosis can lead to appropriate treatment and help in managing any potential psychological challenges they may be facing.