Dissociative amnesia
The term Dissociative amnesia refers to a condition in which a person is unable to remember relevant and important information about his or her life. This forgetting may or may not be limited to a specific areas like that of thematic, it sometimes include much detailed information about the person’s life history and/or general identity. In some infrequent cases called dissociative fugue, the person might not be able to remember most or all of his or her personal information which includes their names, personal history, or friends, and they may sometimes even travel to a different location so as to adopt a completely new identity. In such cases of dissociative amnesia, there exist much greater memory loss than it would be expected in the course of normal forgetting or recall failure.
Dissociative symptoms can sometimes be mild or severe that they keep the person away from being able to function, and it might also affect functional area.