The loss of memory is localized with a specific window of time. For example, a survivor of a car wreck who has no memory of the experience until two days later is experiencing localized amnesia. Selective amnesia happens when a person can recall only small parts of events that took place in a defined period of time. For example, an abuse victim may recall only some parts of the serious of events around the abuse. Generalized amnesia is diagnosed when a person's amnesia encompasses his or her entire life.
Systematized amnesia is characterized by a loss of memory for a specific category of information.
A person with this disorder might, for example, be missing all memories about one specific family member. Dissociative fugue is a rare disorder. An individual with dissociative fugue suddenly and unexpectedly takes physical leave of his or her surroundings and sets off on a journey of some kind. These journeys can last hours, or even several days or months. Individuals experiencing a dissociative fugue have traveled over thousands of miles.