It's essential to be cautious when trying to diagnose or speculate about mental health conditions, especially in people we know or have known. Diagnosing a mental health disorder requires proper training and evaluation by qualified mental health professionals.
Dissociative Identity Disorder (DID), formerly known as Multiple Personality Disorder, is a complex and rare mental health condition characterized by the presence of two or more distinct personality states that control a person's behavior. These personality states might have their memories, preferences, and mannerisms.
People with Narcissistic Personality Disorder (NPD) exhibit a pattern of grandiosity, a lack of empathy, and a need for admiration, among other characteristics. While both NPD and DID fall under the category of personality disorders, they are distinct conditions with different diagnostic criteria.
It's crucial to avoid armchair diagnosing or assuming that someone we know might have a particular mental health condition, especially if we lack the necessary expertise to make such judgments. If you have concerns about someone's mental health, encourage them to seek professional help from a qualified mental health practitioner who can properly assess and provide appropriate support and treatment.