Editing Dissociative fugue (section)

===Definition===
The cause of the fugue state is related to [[Psychogenic amnesia|dissociative amnesia]] (code 300.12 of the [[DSM-IV codes]]<ref>{{cite web |url=http://www.psychiatryonline.com/content.aspx?aID=9708 |archive-url=https://web.archive.org/web/20070928075634/http://www.psychiatryonline.com/content.aspx?aID=9708 |url-status=dead |archive-date=2007-09-28 |title=Dissociative Amnesia, DSM-IV Codes 300.12 ( Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition ) |publisher=Psychiatryonline.com |access-date=2011-11-28 }}</ref>), which has several other subtypes:<ref>[http://www.psychnet-uk.com/dsm_iv/dissociative_amnesia.htm Dissociative Amnesia, DSM-IV Code 300.12 ( PsychNet-UK.com )] {{webarchive |url=https://web.archive.org/web/20101128192837/http://www.psychnet-uk.com/dsm_iv/dissociative_amnesia.htm |date=November 28, 2010 }}</ref> [[selective amnesia]], [[generalized amnesia]], [[continuous amnesia]], and [[systematized amnesia]], in addition to the subtype "dissociative fugue".<ref name="DSM-IV_300.13"/>

Unlike [[retrograde amnesia]] (which is popularly referred to simply as "amnesia", the state where someone forgets events before brain damage), dissociative amnesia is not due to the direct physiological effects of a substance (e.g., a drug of abuse, a medication, DSM-IV codes 291.1 & 292.83) or a neurological or other general medical condition (e.g., amnestic disorder due to a head trauma, DSM-IV Code 294.0).<ref name="PsychNet-UK.com">[http://www.psychnet-uk.com/dsm_iv/_misc/complete_tables.htm Complete List of DSM-IV Codes ( PsychNet-UK.com )] {{webarchive |url=https://web.archive.org/web/20110106174809/http://www.psychnet-uk.com/dsm_iv/_misc/complete_tables.htm |date=January 6, 2011 }}</ref> It is a complex neuropsychological process.<ref>{{cite web |url=http://www.dissociation.co.uk/background.asp |title=Background to Dissociation ( The Pottergate Centre for Dissociation & Trauma ) |publisher=Dissociation.co.uk |access-date=2011-11-28 |url-status=dead |archive-url=https://web.archive.org/web/20120114165147/http://www.dissociation.co.uk/background.asp |archive-date=2012-01-14 }}</ref>

As the person experiencing a dissociative fugue may have recently experienced the reappearance of an event or person representing an earlier trauma, the emergence of an armoring or defensive personality seems to be for some, a logical defense strategy in the situation.<ref>{{Cite journal |last1=Raval |first1=Chintan Madhusudan |last2=Upadhyaya |first2=Sunnetkumar |last3=Panchal |first3=Bharat Navinchandra |date=2015 |title=Dissociative fugue: Recurrent episodes in a young adult |journal=Industrial Psychiatry Journal |language=en |volume=24 |issue=1 |pages=88–90 |doi=10.4103/0972-6748.160944 |doi-access=free |issn=0972-6748 |pmc=4525440 |pmid=26257491}}</ref><ref>Angothu, H., & Pabbathi, L. (2016). Recurrent episodes of dissociative fugue. ''Indian Journal of Psychological Medicine, 38''(2), 160-162. <nowiki>https://doi.org/10.4103/0253-7176.178815</nowiki></ref>

Therefore, the terminology "fugue state" may carry a slight linguistic distinction from "[[dissociation (psychology)|dissociative]] fugue", the former implying a greater degree of "motion".<ref>{{Cite web |title=Amnesia Concepts In Psychology |url=https://scales.arabpsychology.com/2022/11/19/amnesia-2/ |access-date=2023-02-21 |language=en-US}}</ref> For the purposes of this article, then, a "fugue state" occurs while one is "acting out" a "dissociative fugue".

The ''[[DSM-IV|DSM-IV{{Hair space}}]]''<ref name="DSM-IV_300.13"/> defines "dissociative fugue" as:

*sudden, unexpected travel away from home or one's customary place of work, with inability to recall one's past
*confusion about personal identity, or the assumption of a new identity
*significant distress or impairment

The ''[[Merck Manual|Merck Manual{{Hair space}}]]''<ref name="Merck">[[Merck Manual]] 1999 section 15 (Psychiatric Disorders), chapter 188 (Dissociative Disorders)</ref> defines "dissociative fugue" as:

: One or more episodes of amnesia in which the inability to recall some or all of one's past and either the loss of one's identity or the formation of a new identity occur with sudden, unexpected, purposeful travel away from home.

In support of this definition, the ''Merck Manual{{Hair space}}''<ref name="Merck"/> further defines dissociative amnesia as:

: An inability to recall important personal information, usually of a traumatic or stressful nature, that is too extensive to be explained by normal forgetfulness.