Conversation: The conversation between human and AI assistant.
[|Human|] My friend of many years has since died BUT I now suspect that she had DID because of her behavior on several occasions. She once attended dinner at my house, exhibited odd semi-hostile behavior and subsequently denied that she had ever been there and that I introduced her to an old school friend of mine. There were other instances I can mention but dont want to go on if I am totally wrong.  YYYY@YYYY
[|AI|]  Hello and welcome to Chat Doctor. Thanks for your query. It is difficult to make a specific diagnosis of Dissociative Identity Disorder based on the limited information that you have provided. More so, when the information is based on a retrospective recall by a third person. Merely a history of odd behavior and a lapse of memory does not amount to a diagnosis of a DID. SucChatDoctorplex psychological disorders have to be diagnosed by a professional, based on a detailed history from reliable informants, such as close family members, and also a detailed psychological assessment. So, it is better not to speculate and make necessary conclusions or give diagnostic labels to a person who is no more. Wish you all the best.