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Amnesia can be classified as retrograde (for events before the cause), anterograde (inability to store new memories after the cause), global (for information related to all senses and past times), and sense-specific (for events processed by one senseeg, an agnosia). Amnesia may be transient (as occurs after brain trauma), fixed (as occurs after a serious event such as encephalitis, global ischemia, or cardiac arrest), or progressive (as occurs with degenerative dementias, such as Alzheimer’s disease). Dissociative amnesia is classified by the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition, Text Revision, also known as the DSM-IV-TR as one of the dissociative disorders, which are mental disorders in which the normally well-integrated functions of memory, identity, perception, or consciousness are separated (dissociated). In Dissociative Amnesia, the person is unable to remember personal Yeast Infection No More ebook information. They are aware that they have forgotten information, but do not know what they have forgotten. While they are able to perform simple tasks, they usually are unable to perform more complex ones such as shopping and cooking, instead wandering aimlessly. This type of amnesia usually lasts for a period of hours to days follows a severe stressor, and may be selective for a traumatic event. Causes Dissociative amnesia has been linked to overwhelming stress, which might be the result of traumatic eventssuch as war, abuse, accidents or disastersthat the person has experienced or witnessed. There also might be a genetic link to the development of dissociative disorders, including dissociative amnesia, since people with these disorders usually have close relatives who have had similar conditions. Dissociative Fugue: Causes are similar to those of dissociative amnesia with some additional factors.