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'''Dissociative identity disorder''' is defined in the DSM-IV-TR as the presence of two or more personality states or distinct identities that repeatedly take control of one’s behavior. The patient has an inability to recall personal information. The extent of this lack of recall is too great to be explained by normal forgetfulness. The disorder cannot be due to the direct physical effects of a general medical condition or substance.<ref name=dsm>{{cite book | last = American Psychiatric Association | authorlink = American Psychiatric Association | title = Diagnostic and Statistical Manual of Mental Disorders DSM-IV TR (Text Revision) | url = http://books.google.com/books?id=3SQrtpnHb9MC&pg=PA527&lpg=PA535&sig=25ML_7zbvvLZl6ySYCF4DomqeRU | date = 2000-06 | publisher = American Psychiatric Publishing, Inc. | location = Arlington, VA, USA | isbn = 978-0890420249 | doi = 10.1176/appi.books.9780890423349}}</ref>  While the National Library of Medicine's ''Medical Subject Headings'' (MeSH) browser accepts it, it substitutes the term '''multiple personality disorder'''; a literature search in some medical databases may prefer the latter term.<ref>{{MeSH}}</ref>
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'''Dissociative identity disorder''' (DID) is defined in the [[DSM-IV-TR]] as the presence of two or more personality states or distinct identities that repeatedly take control of a patient's behavior, so that the patient has an inability to recall selected memories or personal information. In dissociative identity disorders, the lack of recall is too great to be explained by normal forgetfulness, and is more complete and total than any type of role-specific memories. To fit the diagnosis, the disorder also cannot be due to the direct physical effects of a general medical condition or substance.<ref name=dsm>{{cite book | last = American Psychiatric Association | authorlink = American Psychiatric Association | title = Diagnostic and Statistical Manual of Mental Disorders DSM-IV TR (Text Revision) | url = http://books.google.com/books?id=3SQrtpnHb9MC&pg=PA527&lpg=PA535&sig=25ML_7zbvvLZl6ySYCF4DomqeRU | date = 2000-06 | publisher = American Psychiatric Publishing, Inc. | location = Arlington, VA, USA | isbn = 978-0890420249 | doi = 10.1176/appi.books.9780890423349}}</ref>   


DID entails a failure to integrate certain aspects of memory, consciousness and identity. Patients experience frequent gaps in their memory for their personal history, past and present. Patients with DID report having severe physical and sexual abuse, especially during childhood. The reports of patients with DID are often validated by objective evidence.<ref name=dsm/>
The National Library of Medicine's ''Medical Subject Headings'' (MeSH) browser also accepts this condition as a recognized illness, under the name '''multiple personality disorder'''; a literature search in some medical databases may prefer the latter term.<ref>{{MeSH}}</ref> The idea of multiple personalities arises from the tendency for patients with dissociative identity disorders to claim different names and to display different (sometimes radically different) modes of behavior and other facets of personality and identity consistently associated with those names.  


Physical evidence may include variations in physiological functions in different identity states, including differences in vision, levels of pain tolerance, symptoms of asthma, the response of blood glucose to insulin and sensitivity to allergens. Other physical findings may include scars from physical abuse or self-inflicted injuries, headaches or migraines, asthma and irritable bowel syndrome.<ref name=dsm/>
The etiology of DID is believed to entail a failure to integrate certain aspects of memory, conscious awareness and identity. Patients experience frequent gaps in their memory (often reported as "blackouts") for their personal history, past and present. Patients with DID also typically report histories of severe physical and sexual abuse, especially during childhood; reports that are frequently validated by objective evidence.<ref name=dsm/>


DID is found in a variety of cultures around the world. It is diagnosed three to nine times more often in adult females than males. Females average 15 or more identities, males eight identities. The sharp rise in the reported cases of DID in the U.S. may be due the greater awareness of DID’s diagnosis, which has caused an increased identification of those that were previously undiagnosed.<ref name=dsm/>
Physical evidence may include systematic variations in physiological functions associated with different identity states, including differences in vision, levels of pain tolerance, symptoms of somatic conditions such as asthma, the response of blood glucose to insulin and sensitivity to allergens. Other physical findings may include scars from physical abuse or self-inflicted injuries, headaches or migraines, asthma and irritable bowel syndrome.<ref name=dsm/> DID has been found in a variety of cultures around the world. It is diagnosed three to nine times more often in adult females than males, and female patients also report more identities. Females average 15 or more identities, while males average eight identities.<ref name=dsm/>


The average time period from DID’s first presentation of symptoms to its diagnosis is six to seven years. DID may become less manifest as patients reach past their late 40’s, but it can reemerge during stress, trauma or substance abuse. It is suggested in several studies that DID is more likely to occur with first-degree biological relatives of people that already have DID, than in the regular population.<ref name=dsm/>
The average time period from the first presentation of DID symptoms to its diagnosis is six to seven years. DID is associated to some extent with young adult patients. It may become less manifest as patients reach past their late 40’s, but in such cases it can reemerge during stress, trauma or substance abuse. Several studies have suggested that DID is more likely to occur among first-degree biological relatives of people who already have DID, than in the regular population.<ref name=dsm/>
 
Though the majority of scientific studies have found dissociative identity disorder to be a legitimate condition, there has been ongoing controversy as to its origins and inclusion in the DSM and National Library of Medicine classification.


== Symptomology ==
== Symptomology ==
Individuals diagnosed with DID demonstrate a variety of symptoms with wide fluctuations across time;  functioning can vary from severe impairment in daily functioning to normal or high abilities.<ref name = merckdoc>{{cite web | url = http://www.merck.com/mmpe/sec15/ch197/ch197e.html | title = Dissociative Identity Disorder, doctor's reference | publisher = Merck.com  | date = 2005-11-01 }}</ref>
Individuals diagnosed with DID demonstrate a variety of symptoms with wide fluctuations over time. Functioning can vary from severe impairment in daily functioning to normal or even high abilities.<ref name = merckdoc>{{cite web | url = http://www.merck.com/mmpe/sec15/ch197/ch197e.html | title = Dissociative Identity Disorder, doctor's reference | publisher = Merck.com  | date = 2005-11-01 }}</ref> Patients may experience an extremely broad array of other symptoms that resemble epilepsy, schizophrenia, anxiety disorders, mood disorders, post traumatic stress disorder, personality disorders, and eating disorders.<ref name = merckdoc/>


Patients may experience an extremely broad array of other symptoms that resemble epilepsy, schizophrenia, anxiety disorders, mood disorders, post traumatic stress disorder, personality disorders, and eating disorders.<ref name = merckdoc/>
== Causes ==
The causes of dissociative identity disorder are theoretically linked with the interaction of overwhelming stress, traumatic antecedents,<ref>{{cite journal  | author = Pearson, M.L.  | year = 1997  |journal=Dissociation |volume=10 |issue=1 |pages=58–62: | title =Childhood trauma, adult trauma, and dissociation  | url = https://scholarsbank.uoregon.edu/dspace/bitstream/1794/1837/1/Diss_10_1_9_OCR.pdf |format=PDF}}</ref> insufficient childhood nurturing, and an innate ability to dissociate memories or experiences from consciousness.<ref name = merckdoc/>  Prolonged child abuse is frequently a factor, with a very high percentage of patients reporting documented abuse<ref>{{cite journal |last=Kluft |first=RP  |year=2003 |month= |title=Current Issues in Dissociative Identity Disorder |journal=Bridging Eastern and Western Psychiatry |volume=1 |issue=1 |pages=71–87 |id= |url=http://www.psyter.org/allegati/180/Kluft.pdf |format=PDF}}</ref> often confirmed by objective evidence.<ref name=dsm>{{cite book | last = American Psychiatric Association | authorlink = American Psychiatric Association | title = Diagnostic and Statistical Manual of Mental Disorders DSM-IV TR (Text Revision) | url = http://books.google.com/books?id=3SQrtpnHb9MC&pg=PA527&lpg=PA535&sig=25ML_7zbvvLZl6ySYCF4DomqeRU | date = 2000-06 | publisher = American Psychiatric Publishing, Inc. | location = Arlington, VA, USA | isbn = 978-0890420249 | doi = 10.1176/appi.books.9780890423349}}</ref> The Diagnostic and Statistical Manual of Mental Disorders states that patients with DID often report having a history of severe physical and sexual abuse. The reports of patients suffering from DID are "often confirmed by objective evidence," and the DSM notes that the abusers in those situations may be inclined to "deny or distort” these acts. The DSM also states that "controversy surrounds the accuracy" of the reports of child abuse, because childhood memories can possibly be distorted and some sufferers of this disorder are "highly hypnotizable and especially vulnerable to suggestive influences." <ref name = dsm/> Research has  shown that DID is characterized by reports of extensive childhood trauma, usually child abuse.<ref>{{cite journal |author=Putnam FW, Guroff JJ, Silberman EK, Barban L, Post RM |title=The clinical phenomenology of multiple personality disorder: review of 100 recent cases |journal=J Clin Psychiatry |volume=47 |issue=6 |pages=285–93 |year=1986 |month=June |pmid=3711025 |doi= |url=}}</ref><ref>{{cite journal |author=Ross CA, Miller SD, Bjornson L, Reagor P, Fraser GA, Anderson G |title=Abuse histories in 102 cases of multiple personality disorder |journal=Can J Psychiatry |volume=36 |issue=2 |pages=97–101 |year=1991 |month=March |pmid=2044042 |doi= |url=}}</ref><ref>{{cite journal |author=Boon S, Draijer N |title=Multiple personality disorder in The Netherlands: a clinical investigation of 71 patients |journal=Am J Psychiatry |volume=150 |issue=3 |pages=489–94 |year=1993 |month=March |pmid=8434668 |doi= |url=http://ajp.psychiatryonline.org/cgi/pmidlookup?view=long&pmid=8434668}}</ref> 
Dissociation is recognized as a symptomatic presentation in response to psychological trauma, extreme emotional stress, and in association with emotional dysregulation and borderline personality disorder.<ref>{{cite journal |author=Marmer S, Fink D |title=Rethinking the comparison of Borderline Personality Disorder and multiple personality disorder |journal=Psychiatr Clin North Am |volume=17 |issue=4 |pages=743–71 |year=1994 |pmid=7877901}}</ref> Some consider it a culture bound and iatrogenic syndrome <ref name=Piper>{{cite journal |author=Piper A, Merskey H |title=The persistence of folly: a critical examination of dissociative identity disorder. Part I. The excesses of an improbable concept |journal=Canadian journal of psychiatry. Revue canadienne de psychiatrie |volume=49 |issue=9 |pages=592–600 |year=2004 |pmid=15503730 |doi=| url = http://ww1.cpa-apc.org:8080/Publications/Archives/CJP/2004/september/piper.pdf | format = pdf}}</ref> while others contest this idea <ref name=Ross>{{cite journal |last=Ross |first=C. |coauthors=Norton, G. & Fraser, G. |year=1989 |title=Evidence against the iatrogenesis of multiple personality disorder |journal=Dissociation |volume=2 |issue=2 |pages=61–65  |url=https://scholarsbank.uoregon.edu/dspace/bitstream/1794/1424/1/Diss_2_2_2_OCR.pdf |format=PDF|accessdate=}}</ref><ref name=Braun>{{cite journal  | author = Braun, B.G.  | year = 1989
| title = Dissociation: Vol. 2, No. 2, p. 066-069: Iatrophilia and Iatrophobia in the diagnosis and treatment of MPD  | url = https://scholarsbank.uoregon.edu/dspace/bitstream/1794/1425/1/Diss_2_2_3_OCR.pdf
|format=PDF| accessdate =}}</ref>


== Causes ==
==Prevalence==
The causes of dissociative identity disorder are theoretically linked with the interaction of overwhelming stress, traumatic antecedents,<ref>{{cite journal  | author = Pearson, M.L.  | year = 1997  |journal=Dissociation |volume=10 |issue=1 |pages=58–62: | title =Childhood trauma, adult trauma, and dissociation  | url = https://scholarsbank.uoregon.edu/dspace/bitstream/1794/1837/1/Diss_10_1_9_OCR.pdf |format=PDF}}</ref> insufficient childhood nurturing, and an innate ability to dissociate memories or experiences from consciousness.<ref name = merckdoc/>  Prolonged child abuse is frequently a factor, with a very high percentage of patients reporting documented abuse<ref>{{cite journal |last=Kluft |first=RP  |year=2003 |month= |title=Current Issues in Dissociative Identity Disorder |journal=Bridging Eastern and Western Psychiatry |volume=1 |issue=1 |pages=71–87 |id= |url=http://www.psyter.org/allegati/180/Kluft.pdf |format=PDF}}</ref><ref name=merckpat>{{cite web | url = http://www.merck.com/mmhe/sec07/ch106/ch106d.html | title = Dissociative Identity Disorder, patient's reference | publisher = Merck.com | date = 2003-02-01 }}</ref> often confirmed by objective evidence.<ref name=dsm>{{cite book | last = American Psychiatric Association | authorlink = American Psychiatric Association | title = Diagnostic and Statistical Manual of Mental Disorders DSM-IV TR (Text Revision) | url = http://books.google.com/books?id=3SQrtpnHb9MC&pg=PA527&lpg=PA535&sig=25ML_7zbvvLZl6ySYCF4DomqeRU | date = 2000-06 | publisher = American Psychiatric Publishing, Inc. | location = Arlington, VA, USA | isbn = 978-0890420249 | doi = 10.1176/appi.books.9780890423349}}</ref> The Diagnostic and Statistical Manual of Mental Disorders states that patients with DID often report having a history of severe physical and sexual abuse. The reports of patients suffering from DID are "often confirmed by objective evidence," and the DSM notes that the abusers in those situations may be inclined to "deny or distort” these acts.<ref name = dsm/> Research has consistently shown that DID is characterized by reports of extensive childhood trauma, usually child abuse.<ref>{{cite journal |author=Putnam FW, Guroff JJ, Silberman EK, Barban L, Post RM |title=The clinical phenomenology of multiple personality disorder: review of 100 recent cases |journal=J Clin Psychiatry |volume=47 |issue=6 |pages=285–93 |year=1986 |month=June |pmid=3711025 |doi= |url=}}</ref><ref>{{cite journal |author=Ross CA, Miller SD, Bjornson L, Reagor P, Fraser GA, Anderson G |title=Abuse histories in 102 cases of multiple personality disorder |journal=Can J Psychiatry |volume=36 |issue=2 |pages=97–101 |year=1991 |month=March |pmid=2044042 |doi= |url=}}</ref><ref>{{cite journal |author=Boon S, Draijer N |title=Multiple personality disorder in The Netherlands: a clinical investigation of 71 patients |journal=Am J Psychiatry |volume=150 |issue=3 |pages=489–94 |year=1993 |month=March |pmid=8434668 |doi= |url=http://ajp.psychiatryonline.org/cgi/pmidlookup?view=long&pmid=8434668}}</ref>  
There have been dramatic increases in reported cases of DID in the United States in recent years. The DSM-IV-TR states that the sharp rise in reported cases has been given a range of different interpretations. Some believe that specification of the conditions combined with the greater awareness of the diagnosis among those in the mental health field have caused the identification of cases that previously woud not have been diagnosed. Others believe that the condition has been over-diagnosed among those that are highly suggestible. <ref name=dsm/> Others have claimed that individuals suffering from DID were previously misdiagnosed. <ref name=putnam>{{cite book  | last = Putnam   | first = Frank W.  | title = Diagnosis and Treatment of Multiple Personality Disorder   | publisher = The Guilford Press  | year = 1989  | location =New York | pages = 351  | isbn = 0-89862-177-1}}</ref>
Dissociation is recognized as a symptomatic presentation in response to psychological trauma, extreme emotional stress, and in association with emotional dysregulation and borderline personality disorder.<ref>{{cite journal |author=Marmer S, Fink D |title=Rethinking the comparison of Borderline Personality Disorder and multiple personality disorder |journal=Psychiatr Clin North Am |volume=17 |issue=4 |pages=743–71 |year=1994 |pmid=7877901}}</ref>  


== DMS inclusion ==
== DSM inclusion ==
DID meets all of the guidelines for inclusion in the DSM and is supported by taxometric research.<ref name=GleavesMay>{{cite journal |last=Gleaves |first=D.H.  |coauthors=May MC, Cardeña E  |year=2001  |title= An examination of the diagnostic validity of dissociative identity disorder. |journal= |volume=21 |issue=4 |pages=577-608 |url=http://leadershipcouncil.org/docs/gleaves2001.pdf}}</ref> Research has established DID as a valid diagnosis.<ref name=GleavesMay/> In one study, DID was found to be a genuine disorder with a constant set of core features.<ref name=Ross>{{cite journal |last=Ross |first=C. |coauthors=Norton, G. & Fraser, G. |year=1989 |title=Evidence against the iatrogenesis of multiple personality disorder |journal=Dissociation |volume=2 |issue=2 |pages=61–65  |url=https://scholarsbank.uoregon.edu/dspace/bitstream/1794/1424/1/Diss_2_2_2_OCR.pdf |format=PDF}}</ref>
DID meets all of the guidelines for inclusion in the DSM and is supported by taxometric research.<ref name=GleavesMay>{{cite journal |last=Gleaves |first=D.H.  |coauthors=May MC, Cardeña E  |year=2001  |title= An examination of the diagnostic validity of dissociative identity disorder. |journal= |volume=21 |issue=4 |pages=577-608 |url=http://leadershipcouncil.org/docs/gleaves2001.pdf}}</ref> Research has established DID as a valid diagnosis.<ref name=GleavesMay/> In one study, DID was found to be a genuine disorder with a constant set of core features.<ref name=Ross/>


== History ==
== History ==
The 19th century saw a number of reported cases of multiple personalities which Rieber estimated would be close to 100.<ref>{{cite journal |author=Rieber RW |title=The duality of the brain and the multiplicity of minds: can you have it both ways? |journal=History of psychiatry |volume=13 |issue=49 Pt 1 |pages=3–17 |year=2002 |pmid=12094818| doi = 10.1177/0957154X0201304901}}</ref>
The 19th century saw a number of reported cases of multiple personalities which Rieber estimated would be close to 100.<ref>{{cite journal |author=Rieber RW |title=The duality of the brain and the multiplicity of minds: can you have it both ways? |journal=History of psychiatry |volume=13 |issue=49 Pt 1 |pages=3–17 |year=2002 |pmid=12094818| doi = 10.1177/0957154X0201304901}}</ref>


By the late 19th century there was a general realization that emotionally traumatic experiences could cause long-term disorders which may manifest with a variety of symptoms.<ref>{{cite journal |author= Borch-Jacobsen M, Brick D |title= How to predict the past: from trauma to repression |journal= History of Psychiatry |volume=11 |issue= |pages=15–35 |year=2000|doi=10.1177/0957154X0001104102 }}</ref> Between 1880 and 1920, many great international medical conferences devoted a lot of time to sessions on dissociation.<ref name=putnam>{{cite book  | last = Putnam  | first = Frank W. | title = Diagnosis and Treatment of Multiple Personality Disorder  | publisher = The Guilford Press | year = 1989  | location =New York | pages = 351  | isbn = 0-89862-177-1}}</ref>
By the late 19th century there was a general realization that emotionally traumatic experiences could cause long-term disorders which may manifest with a variety of symptoms.<ref>{{cite journal |author= Borch-Jacobsen M, Brick D |title= How to predict the past: from trauma to repression |journal= History of Psychiatry |volume=11 |issue= |pages=15–35 |year=2000|doi=10.1177/0957154X0001104102 }}</ref> Between 1880 and 1920, many great international medical conferences devoted a lot of time to sessions on dissociation.<ref name=putnam/> Starting in about 1927, there was a large increase in the number of reported cases of  schizophrenia, which was matched by an equally large decrease in the number of multiple personality reports.<ref name=putnam/> Bleuler also included multiple personality in his category of schizophrenia. It was found in the 1980s that MPD patients are often misdiagnosed as suffering from schizophrenia.<ref name=putnam/> Multiple personality disorder began to emerge as a separate disorder in the 1970s when an initially small number of clinicians worked to re-establish MPD as a legitimate diagnosis.<ref name=putnam/>
 
Popular awareness of the condition of "multiple personalities" rose dramatically after publicity surrounding a book<ref>Schreiber, Flora Rheta (1973). Sybil. New York: Warner Books, Inc.. p. 460. ISBN 0-446-35940-8.</ref>  and movie dealing with the case of "Sybil", since identified as Shirley Ardell Mason (1923-1998) from a small town in Minnesota, whose 13-16 distinct identities were identified in psychotherapy with Flora Rheta Schreiber while she was a student at Columbia University. Herbert Siegel, a psychiatrist who also saw Mason as a patient disputed Schreiber's diagnosis and characterized Mason as "an extremely suggestible hysteric." <ref>Borch-Jacobsen, M (1997-04-24). "Sybil-The Making of a Disease: An Interview with Dr. Herbert Spiegel". New York Review of Books 44 (7). Retrieved on 2009-04-02.</ref> The circumstances that led Schreiber to go public with the case, and Dr. Siegel to also go public with his skepticism added significantly to the controversy surrounding this diagnosis. However, Dr. Leah Dickstein, whose mentor was Dr. Wilbur <ref>[http://www.nlm.nih.gov/changingthefaceofmedicine/physicians/biography_85.html Changing the Face of Medicine Dr. Leah J. Dickstein]</ref> also stated that she was in touch with Mason for many years after Wilbur died. She remembers Mason telling her that "every word in the book is true." She stated that Wilbur had "no need to make this up."<ref>{{cite news | last =Ritter | first =Malcolm | title =Doubt Cast on Story of `Sybil' | publisher =Associated Press | date =1998-08-16}}</ref> (Note: There is much more controversy about whether or not the condition actually exists in the general public than among mental health researchers and therapists, as the evidence cited here indicates.)
 
==Controversy==
Some skeptical of the diagnosis have stated that the DID diagnosis is not a reliable one and that the arguments to support the concept are illogical.<ref name=Piper2>{{cite journal |author=Piper A, Merskey H |title=The persistence of folly: critical examination of dissociative identity disorder. Part II. The defence and decline of multiple personality or dissociative identity disorder |journal=Canadian journal of psychiatry. Revue canadienne de psychiatrie |volume=49 |issue=10 |pages=678–83 |year=2004 |pmid=15560314 |doi= | url = http://ww1.cpa-apc.org:8080/Publications/Archives/CJP/2004/october/piper.pdf | format = pdf}}</ref> Some have critiqued the DID diagnosis, stating that it was found primarily in the United States and is a cultural construct.<ref name=Spanos>{{cite book |author=Spanos, Nicholas P. |title=Multiple Identities & False Memories: A Sociocognitive Perspective |publisher=American Psychological Association (APA) |location= |year=2001 |pages= |isbn=1-55798-893-5 |oclc= |doi= |accessdate=}}</ref>, yet more recent research has shown different diagnostic rates in other parts of the world.<ref name=Dutch>{{cite journal |author=Friedl MC, Draijer N |title=Dissociative disorders in Dutch psychiatric inpatients |journal=The American journal of psychiatry |volume=157 |issue=6 |pages=1012–3 |year=2000 |pmid=10831486| doi = 10.1176/appi.ajp.157.6.1012}}</ref><ref name=Turkey>{{cite journal |author=Sar V, Koyuncu A, Ozturk E, ''et al'' |title=Dissociative disorders in the psychiatric emergency ward |journal=General hospital psychiatry |volume=29 |issue=1 |pages=45–50 |year=2007 |pmid=17189745 |doi=10.1016/j.genhosppsych.2006.10.009}}</ref> Others have stated that the research on DID does not support the ideas that DID is a construct of either psychotherapy or the media<ref name=Gleaves>{{cite journal|last=Gleaves |first=D.|year=1996 |month=July |title=The sociocognitive model of dissociative identity disorder: a reexamination of the evidence|journal=Psychological Bulletin |volume=120 |issue=1|pages=42–59 |pmid=8711016 |doi=10.1037/0033-2909.120.1.42|url=http://content.apa.org/journals/bul/120/1/42}}</ref> or they have critiqued those skeptical of the DID diagnosis and theories of iatrogenesis and social construct.<ref name = Brown>{{cite journal |last= Brown |first= D |coauthors= Frischholz E, Scheflin A. |year= 1999 |title= Iatrogenic dissociative identity disorder - an evaluation of the scientific evidence |journal= The Journal of Psychiatry and Law |volume= XXVII No. 3-4 |issue= Fall-Winter 1999 |pages= 549–637}}</ref>
One researcher states that the evidence backing the traumatic origins of DID is "plagued by poor methodology." <ref>{{cite journal |last=Kihlstrom |first=J. F.  |coauthors= |year=April 2005  |title=Dissociative Disorders |journal=Clinical Psychology |volume=` |issue= |pages=227-253 |url=http://arjournals.annualreviews.org/doi/abs/10.1146/annurev.clinpsy.1.102803.143925 |accessdate=  |quote=}}</ref>, however the DSM states that DID sufferers have "past histories of sexual or physical abuse (that) are confirmed by objective evidence." <ref name=dsm/>


Starting in about 1927, there was a large increase in the number of reported cases of  schizophrenia, which was matched by an equally large decrease in the number of multiple personality reports.<ref name=putnam/> Bleuler also included multiple personality in his category of schizophrenia. It was found in the 1980s that MPD patients are often misdiagnosed as suffering from schizophrenia.<ref name=putnam/> Multiple personality disorder began to emerge as a separate disorder in the 1970s when an initially small number of clinicians worked to re-establish MPD as a legitimate diagnosis.<ref name=putnam/>
== Forensic aspects of DID == 
The book ''Forensic aspects of dissociative identity disorder'' looks at the role of crime in the lives of people that suffer from Dissociative Identity Disorder. It is a collection of essays written by several international researchers. It explores the legal, moral, ethical and clinical questions that psychotherapists and other professionals face while working with those suffering from Dissociative Identity Disorder. Authors that have contributed to the book come from the fields of psychotherapy, counselling, psychology, medicine, law, police, psychoanalysis and social work. Chapters include discussions on ritual abuse, dissociative identity disorder, mind control, extreme abuse, survivor accounts and criminal convictions.<ref name=Sachs>{{cite book |author=Sachs, A; Galton, G.(Eds) |title=Forensic aspects of dissociative identity disorder | publisher = Karnac Books |location=London |year= 2008 |pages=215 |url=http://books.google.com/books?id=upHtL9lual0C&dq=Forensic+aspects+of+dissociative+identity+disorder+|&printsec=frontcover&source=bl&ots=caNy__6-zt&sig=VwIOryBkcSN0nh24CJR3aJkS_gs&hl=en&ei=702fSbmpOo_ftgfe5eSVDQ&sa=X&oi=book_result&resnum=2&ct=result |isbn =1-855-75596-3}}</ref>


==Notes==
==Notes==
{{reflist}}
<small>
<references>


</references>
</small>


==External links==
*[http://www.isst-d.org/ International Society for the Study of Trauma and Dissociation]
*[http://www.sho.com/site/video/brightcove/series/title.do?bcpid=1847322218&bclid=5253538001&bctid=6803420001  United States of Tara - Learn More About D.I.D. - Showtime supports the awareness for Dissociative Identity Disorder]


==Bibliography==
[[Category:Suggestion Bot Tag]]
*{{cite book |author=Baer, Richard A. |title=Switching Time: A Doctor's Harrowing Story of Treating a Woman with 17 Personalities |publisher=Crown |location=[New York] |year=2007 |pages= |isbn=0307382664}}
*{{cite journal  | author = Braun, B.G.  | year = 1989  | title = Dissociation: Vol. 2, No. 2, p. 066-069: Iatrophilia and Iatrophobia in the diagnosis and treatment of MPD  | url = https://scholarsbank.uoregon.edu/dspace/bitstream/1794/1425/1/Diss_2_2_3_OCR.pdf |format=PDF}}
*{{cite journal |last= Brown |first= D |coauthors= Frischholz E, Scheflin A. |year= 1999 |title= Iatrogenic dissociative identity disorder - an evaluation of the scientific evidence |journal= The Journal of Psychiatry and Law |volume= XXVII No. 3-4 |issue= Fall-Winter 1999 |pages= 549–637}}
*{{cite journal |last=Gleaves |first=D. |year=1996 |month=July |title=The sociocognitive model of dissociative identity disorder: a reexamination of the evidence |journal=Psychological Bulletin |volume=120 |issue=1 |pages=42–59 |pmid = 8711016 |doi=10.1037/0033-2909.120.1.42}}
*{{cite book  | last =Goettmann  | first =B. A.  | coauthors = Greaves, B. G.,  Coons M. P.    | title =Multiple personality and dissociation, 1791-1992: a complete bibliography  | publisher =The Sidran Press  | year =1994  | location =Lutherville, MD | pages =85  | url =http://boundless.uoregon.edu/cdm4/item_viewer.php?CISOROOT=/diss&CISOPTR=38 | isbn =0-9629164-5-5}}
*{{cite journal  | author = Kluft, R.P.  | year = 1989  | title =Iatrogenic creation of new alter personalities |journal=Dissociation |volume=2 |issue=2 |pages=83–91 |url =https://scholarsbank.uoregon.edu/dspace/bitstream/1794/1428/1/Diss_2_2_6_OCR.pdf  |format=PDF}}
*{{cite news    | last =Underwood  | first =Anne  | title =Identity Crisis  What is it like to live with 17 alternate selves? A survivor of multiple personality disorder discusses the disease and the painful integration process that made her whole.  | publisher =Newsweek  | date =October 22, 2007  | url =http://www.newsweek.com/id/57861}}

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Dissociative identity disorder (DID) is defined in the DSM-IV-TR as the presence of two or more personality states or distinct identities that repeatedly take control of a patient's behavior, so that the patient has an inability to recall selected memories or personal information. In dissociative identity disorders, the lack of recall is too great to be explained by normal forgetfulness, and is more complete and total than any type of role-specific memories. To fit the diagnosis, the disorder also cannot be due to the direct physical effects of a general medical condition or substance.[1]

The National Library of Medicine's Medical Subject Headings (MeSH) browser also accepts this condition as a recognized illness, under the name multiple personality disorder; a literature search in some medical databases may prefer the latter term.[2] The idea of multiple personalities arises from the tendency for patients with dissociative identity disorders to claim different names and to display different (sometimes radically different) modes of behavior and other facets of personality and identity consistently associated with those names.

The etiology of DID is believed to entail a failure to integrate certain aspects of memory, conscious awareness and identity. Patients experience frequent gaps in their memory (often reported as "blackouts") for their personal history, past and present. Patients with DID also typically report histories of severe physical and sexual abuse, especially during childhood; reports that are frequently validated by objective evidence.[1]

Physical evidence may include systematic variations in physiological functions associated with different identity states, including differences in vision, levels of pain tolerance, symptoms of somatic conditions such as asthma, the response of blood glucose to insulin and sensitivity to allergens. Other physical findings may include scars from physical abuse or self-inflicted injuries, headaches or migraines, asthma and irritable bowel syndrome.[1] DID has been found in a variety of cultures around the world. It is diagnosed three to nine times more often in adult females than males, and female patients also report more identities. Females average 15 or more identities, while males average eight identities.[1]

The average time period from the first presentation of DID symptoms to its diagnosis is six to seven years. DID is associated to some extent with young adult patients. It may become less manifest as patients reach past their late 40’s, but in such cases it can reemerge during stress, trauma or substance abuse. Several studies have suggested that DID is more likely to occur among first-degree biological relatives of people who already have DID, than in the regular population.[1]

Though the majority of scientific studies have found dissociative identity disorder to be a legitimate condition, there has been ongoing controversy as to its origins and inclusion in the DSM and National Library of Medicine classification.

Symptomology

Individuals diagnosed with DID demonstrate a variety of symptoms with wide fluctuations over time. Functioning can vary from severe impairment in daily functioning to normal or even high abilities.[3] Patients may experience an extremely broad array of other symptoms that resemble epilepsy, schizophrenia, anxiety disorders, mood disorders, post traumatic stress disorder, personality disorders, and eating disorders.[3]

Causes

The causes of dissociative identity disorder are theoretically linked with the interaction of overwhelming stress, traumatic antecedents,[4] insufficient childhood nurturing, and an innate ability to dissociate memories or experiences from consciousness.[3] Prolonged child abuse is frequently a factor, with a very high percentage of patients reporting documented abuse[5] often confirmed by objective evidence.[1] The Diagnostic and Statistical Manual of Mental Disorders states that patients with DID often report having a history of severe physical and sexual abuse. The reports of patients suffering from DID are "often confirmed by objective evidence," and the DSM notes that the abusers in those situations may be inclined to "deny or distort” these acts. The DSM also states that "controversy surrounds the accuracy" of the reports of child abuse, because childhood memories can possibly be distorted and some sufferers of this disorder are "highly hypnotizable and especially vulnerable to suggestive influences." [1] Research has shown that DID is characterized by reports of extensive childhood trauma, usually child abuse.[6][7][8] Dissociation is recognized as a symptomatic presentation in response to psychological trauma, extreme emotional stress, and in association with emotional dysregulation and borderline personality disorder.[9] Some consider it a culture bound and iatrogenic syndrome [10] while others contest this idea [11][12]

Prevalence

There have been dramatic increases in reported cases of DID in the United States in recent years. The DSM-IV-TR states that the sharp rise in reported cases has been given a range of different interpretations. Some believe that specification of the conditions combined with the greater awareness of the diagnosis among those in the mental health field have caused the identification of cases that previously woud not have been diagnosed. Others believe that the condition has been over-diagnosed among those that are highly suggestible. [1] Others have claimed that individuals suffering from DID were previously misdiagnosed. [13]

DSM inclusion

DID meets all of the guidelines for inclusion in the DSM and is supported by taxometric research.[14] Research has established DID as a valid diagnosis.[14] In one study, DID was found to be a genuine disorder with a constant set of core features.[11]

History

The 19th century saw a number of reported cases of multiple personalities which Rieber estimated would be close to 100.[15]

By the late 19th century there was a general realization that emotionally traumatic experiences could cause long-term disorders which may manifest with a variety of symptoms.[16] Between 1880 and 1920, many great international medical conferences devoted a lot of time to sessions on dissociation.[13] Starting in about 1927, there was a large increase in the number of reported cases of schizophrenia, which was matched by an equally large decrease in the number of multiple personality reports.[13] Bleuler also included multiple personality in his category of schizophrenia. It was found in the 1980s that MPD patients are often misdiagnosed as suffering from schizophrenia.[13] Multiple personality disorder began to emerge as a separate disorder in the 1970s when an initially small number of clinicians worked to re-establish MPD as a legitimate diagnosis.[13]

Popular awareness of the condition of "multiple personalities" rose dramatically after publicity surrounding a book[17] and movie dealing with the case of "Sybil", since identified as Shirley Ardell Mason (1923-1998) from a small town in Minnesota, whose 13-16 distinct identities were identified in psychotherapy with Flora Rheta Schreiber while she was a student at Columbia University. Herbert Siegel, a psychiatrist who also saw Mason as a patient disputed Schreiber's diagnosis and characterized Mason as "an extremely suggestible hysteric." [18] The circumstances that led Schreiber to go public with the case, and Dr. Siegel to also go public with his skepticism added significantly to the controversy surrounding this diagnosis. However, Dr. Leah Dickstein, whose mentor was Dr. Wilbur [19] also stated that she was in touch with Mason for many years after Wilbur died. She remembers Mason telling her that "every word in the book is true." She stated that Wilbur had "no need to make this up."[20] (Note: There is much more controversy about whether or not the condition actually exists in the general public than among mental health researchers and therapists, as the evidence cited here indicates.)

Controversy

Some skeptical of the diagnosis have stated that the DID diagnosis is not a reliable one and that the arguments to support the concept are illogical.[21] Some have critiqued the DID diagnosis, stating that it was found primarily in the United States and is a cultural construct.[22], yet more recent research has shown different diagnostic rates in other parts of the world.[23][24] Others have stated that the research on DID does not support the ideas that DID is a construct of either psychotherapy or the media[25] or they have critiqued those skeptical of the DID diagnosis and theories of iatrogenesis and social construct.[26] One researcher states that the evidence backing the traumatic origins of DID is "plagued by poor methodology." [27], however the DSM states that DID sufferers have "past histories of sexual or physical abuse (that) are confirmed by objective evidence." [1]

Forensic aspects of DID

The book Forensic aspects of dissociative identity disorder looks at the role of crime in the lives of people that suffer from Dissociative Identity Disorder. It is a collection of essays written by several international researchers. It explores the legal, moral, ethical and clinical questions that psychotherapists and other professionals face while working with those suffering from Dissociative Identity Disorder. Authors that have contributed to the book come from the fields of psychotherapy, counselling, psychology, medicine, law, police, psychoanalysis and social work. Chapters include discussions on ritual abuse, dissociative identity disorder, mind control, extreme abuse, survivor accounts and criminal convictions.[28]

Notes

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 American Psychiatric Association (2000-06). Diagnostic and Statistical Manual of Mental Disorders DSM-IV TR (Text Revision). Arlington, VA, USA: American Psychiatric Publishing, Inc.. DOI:10.1176/appi.books.9780890423349. ISBN 978-0890420249. 
  2. ↑ Anonymous (2024), Dissociative identity disorder (English). Medical Subject Headings. U.S. National Library of Medicine.
  3. ↑ 3.0 3.1 3.2 Dissociative Identity Disorder, doctor's reference. Merck.com (2005-11-01).
  4. ↑ Pearson, M.L. (1997). "Childhood trauma, adult trauma, and dissociation" (PDF). Dissociation 10 (1): 58–62:.
  5. ↑ Kluft, RP (2003). "Current Issues in Dissociative Identity Disorder" (PDF). Bridging Eastern and Western Psychiatry 1 (1): 71–87.
  6. ↑ Putnam FW, Guroff JJ, Silberman EK, Barban L, Post RM (June 1986). "The clinical phenomenology of multiple personality disorder: review of 100 recent cases". J Clin Psychiatry 47 (6): 285–93. PMID 3711025. [e]
  7. ↑ Ross CA, Miller SD, Bjornson L, Reagor P, Fraser GA, Anderson G (March 1991). "Abuse histories in 102 cases of multiple personality disorder". Can J Psychiatry 36 (2): 97–101. PMID 2044042. [e]
  8. ↑ Boon S, Draijer N (March 1993). "Multiple personality disorder in The Netherlands: a clinical investigation of 71 patients". Am J Psychiatry 150 (3): 489–94. PMID 8434668. [e]
  9. ↑ Marmer S, Fink D (1994). "Rethinking the comparison of Borderline Personality Disorder and multiple personality disorder". Psychiatr Clin North Am 17 (4): 743–71. PMID 7877901.
  10. ↑ Piper A, Merskey H (2004). "The persistence of folly: a critical examination of dissociative identity disorder. Part I. The excesses of an improbable concept" (pdf). Canadian journal of psychiatry. Revue canadienne de psychiatrie 49 (9): 592–600. PMID 15503730. [e]
  11. ↑ 11.0 11.1 Ross, C.; Norton, G. & Fraser, G. (1989). "Evidence against the iatrogenesis of multiple personality disorder" (PDF). Dissociation 2 (2): 61–65.
  12. ↑ Braun, B.G. (1989). "Dissociation: Vol. 2, No. 2, p. 066-069: Iatrophilia and Iatrophobia in the diagnosis and treatment of MPD" (PDF).
  13. ↑ 13.0 13.1 13.2 13.3 13.4 Putnam, Frank W. (1989). Diagnosis and Treatment of Multiple Personality Disorder. New York: The Guilford Press, 351. ISBN 0-89862-177-1. 
  14. ↑ 14.0 14.1 Gleaves, D.H.; May MC, Cardeña E (2001). "An examination of the diagnostic validity of dissociative identity disorder." 21 (4): 577-608.
  15. ↑ Rieber RW (2002). "The duality of the brain and the multiplicity of minds: can you have it both ways?". History of psychiatry 13 (49 Pt 1): 3–17. DOI:10.1177/0957154X0201304901. PMID 12094818. Research Blogging.
  16. ↑ Borch-Jacobsen M, Brick D (2000). "How to predict the past: from trauma to repression". History of Psychiatry 11: 15–35. DOI:10.1177/0957154X0001104102. Research Blogging.
  17. ↑ Schreiber, Flora Rheta (1973). Sybil. New York: Warner Books, Inc.. p. 460. ISBN 0-446-35940-8.
  18. ↑ Borch-Jacobsen, M (1997-04-24). "Sybil-The Making of a Disease: An Interview with Dr. Herbert Spiegel". New York Review of Books 44 (7). Retrieved on 2009-04-02.
  19. ↑ Changing the Face of Medicine Dr. Leah J. Dickstein
  20. ↑ Ritter, Malcolm. "Doubt Cast on Story of `Sybil'", Associated Press, 1998-08-16.
  21. ↑ Piper A, Merskey H (2004). "The persistence of folly: critical examination of dissociative identity disorder. Part II. The defence and decline of multiple personality or dissociative identity disorder" (pdf). Canadian journal of psychiatry. Revue canadienne de psychiatrie 49 (10): 678–83. PMID 15560314. [e]
  22. ↑ Spanos, Nicholas P. (2001). Multiple Identities & False Memories: A Sociocognitive Perspective. American Psychological Association (APA). ISBN 1-55798-893-5. 
  23. ↑ Friedl MC, Draijer N (2000). "Dissociative disorders in Dutch psychiatric inpatients". The American journal of psychiatry 157 (6): 1012–3. DOI:10.1176/appi.ajp.157.6.1012. PMID 10831486. Research Blogging.
  24. ↑ Sar V, Koyuncu A, Ozturk E, et al (2007). "Dissociative disorders in the psychiatric emergency ward". General hospital psychiatry 29 (1): 45–50. DOI:10.1016/j.genhosppsych.2006.10.009. PMID 17189745. Research Blogging.
  25. ↑ Gleaves, D. (July 1996). "The sociocognitive model of dissociative identity disorder: a reexamination of the evidence". Psychological Bulletin 120 (1): 42–59. DOI:10.1037/0033-2909.120.1.42. PMID 8711016. Research Blogging.
  26. ↑ Brown, D; Frischholz E, Scheflin A. (1999). "Iatrogenic dissociative identity disorder - an evaluation of the scientific evidence". The Journal of Psychiatry and Law XXVII No. 3-4 (Fall-Winter 1999): 549–637.
  27. ↑ Kihlstrom, J. F. (April 2005). "Dissociative Disorders". Clinical Psychology `: 227-253.
  28. ↑ Sachs, A; Galton, G.(Eds) (2008). Forensic aspects of dissociative identity disorder. London: Karnac Books, 215. ISBN 1-855-75596-3. 

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