Dissociative states in multiple personality disorder: a quantitative study

Multiple personality disorder (MPD) patients may experience themselves as several discrete alter personalities who do not share consciousness or memories with one another. In this study, we asked whether MPD patients are different from controls in their ability to learn and remember, and their ability to compartmentalize information. MPD patients were not found to differ from controls in overall memory level. Learning of information by MPD patients in disparate personality states did not result in greater compartmentalization than that of which control subjects were capable. However, there were qualitative differences between the cognitive performance of patients and that of controls attempting to role-play alter personalities. Our results suggest that simple confabulation is not an adequate model for the MPD syndrome, and we consider a possible role for state-dependent learning in the phenomenology of MPD.     

Multiple personality disorder: an analysis of 236 cases

The authors collected a series of 236 cases of multiple personality (MPD) reported to them by 203 psychiatrists, clinical psychologists and other health care professionals. MPD patients experienced extensive sexual (79.2%) and physical (74.9%) abuse as children. They had been in the health care system for an average of 6.7 years before being diagnosed with MPD and had an average of 15.7 personalities at the time of reporting. The most common alter personalities were a child personality (86.0%), a personality of a different age (84.5%), a protector personality (84.0%), and a persecutor personality (84.0%). Patients MPD are highly suicidal with 72% attempting suicide and 2.1% being successful. The patients frequently received diagnoses for other mental disorders. The most common previous diagnoses were for affective disorders (63.7%), personality disorders (57.4%), anxiety disorders (44.3%), and schizophrenia (40.8%).     

Dissociation and displacement: where goes the "ouch?"

Hypnosis is widely used to relieve pain. Current theory emphasizes its dissociative features. Multiple personality patients can eliminate pain in the primary personality by displacing it into underlying alters. The Hilgards demonstrated that normal hypnotized subjects can similarly dissociate pain into a covert cognitive structural system which they called the "hidden observer." The Watkins discovered that "hidden observers" appeared to be the same phenomenon as "ego states." "Ego-state theory" assumes that human personality develops through integration and differentiation. At one end of the continuum, "differentiation" is adaptive. Ego states possess relatively permeable boundaries as in normal moods. At the other end ego-state boundaries become less permeable. Normal "differentiation" becomes maladaptive "dissociation" and multiple personalities may be created. In the intermediate range of the differentiation/dissociation continuum, "covert" ego states can be found in many normal subjects who volunteer for hypnotic laboratory experiments. Normal individuals, like multiple personalities and "hidden observer" subjects, can displace (dissociate) pain into "covert" ego states. The pain is not eliminated. This suggests that when we remove pain by hypnosis we may not be getting away "scot-free."     

Optical differences in cases of multiple personality disorder

Nine patients diagnosed with multiple personality disorder (MPD) and nine control subjects role-playing MPD were given complete ophthalmological examinations to test whether the MPD subjects would show greater variability in visual functioning across alter personalities than would control subjects role-playing MPD. An analysis of variability of eight optical measures in four prominent areas of vision was performed by comparing two covariance matrices for equality. The test on the equality of the two covariance matrices showed that the two groups were significantly different (p less than .05). That is, MPD subjects had significantly more variability in visual functioning across alter personalities than did control subjects. Because the test of equality of the two covariance matrices rejected the null hypothesis, univariate analyses of variance were performed on the eight individual ophthalmological measures that comprised the matrix. The results of these analyses showed that MPD subjects had significantly more variability across alter personalities than did their control counterparts on measures of visual acuity with correction, visual acuity without correction, visual fields, manifest refraction, and eye muscle balance. The data were also analyzed for clinical significance. Blind ratings of the data were performed by comparing the results of the individual dependent measures across the alter personalities of individual MPD and control subjects according to established ophthalmological criteria. The ratings for clinical significance showed that the MPD subjects had 4.5 times the average number of changes in optical functioning between alter personalities of the control subjects, with a mean of 2.56 clinically significant changes for the MPD subjects and .55 clinically significant changes for the control subjects. This difference was also statistically significant (p less than .01).     

Optical differences in multiple personality disorder. A second look

The study was designed as a replication of a study reported in this Journal (Miller S [1989] Optical differences in cases of multiple personality disorder. J. Nerv Ment Dis 177:480-486) which found that subjects with multiple personality disorder (MPD) experienced significantly more changes in visual functioning between alter personalities than a control group simulating the disorder. In the present study, data from 20 patients diagnosed with MPD and 20 control subjects role playing MPD were analyzed for statistical and clinical significance. The findings from the present study appear to confirm results from the earlier study that individuals with MPD experience differences in some aspects of visual functioning between alter personalities. The results further confirm that MPD subjects experience more differences across visual measures than control subjects simulating the disorder. However, the findings from the present study are not entirely consistent across the various visual measures or with findings from previous studies.     

Adolescent multiple personality disorder: a preliminary study of eleven cases

The diagnostic features and treatment histories of 11 adolescents with multiple personality disorder (MPD) are presented. Clinical evaluation revealed that the majority of these adolescents manifested extremely variable school performance, disruptive behavior, trances, amnesias, mood swings, sharp changes in personality, apparent lying, voices heard in the head, and depression. All had a history of childhood trauma: Sexual abuse (73%), physical abuse (73%), and emotional abuse (82%). Seventy-three percent had a parent with a diagnosable dissociative disorder; 36% of the mothers had MPD. These adolescents had a mean number of 24.1 alter personalities and appear to have become multiple at a mean age of 3 years, 1 month. All patients had angry protector alters, depressed alters, scared alters, and child alters. Fifty-four percent of these cases have integrated during treatment or are progressing toward integration. The remaining cases dropped out of therapy.     

Twelve cognitive errors about multiple personality disorder

Multiple personality disorder (MPD) is often responded to with extreme skepticism by mental health professionals. This skepticism is based in part on twelve cognitive errors about the disorder that can be corrected by argument and research evidence. The errors include the mistaken ideas that MPD patients have more than one personality; that the diagnosis means such patients are not responsible for their actions; that MPD patients are really just borderlines; that MPD is an iatrogenic artifact; that MPD can be created experimentally; that MPD must be rare; that MPD is a therapeutic metaphor; that everyone has different personalities; that MPD will go away if you ignore it; that patients pretend to have MPD in order to please the therapist; that the abuse histories of MPD patients are confabulated; and that one must be a hypnotist to treat MPD. It is important to correct these cognitive errors because MPD is not rare. It can be diagnosed with good reliability and its features are stable and consistent in a number of large published series. Although definitive treatment-outcome studies have not been conducted, clinical experience to date suggests that the disorder can often be cured with psychotherapy. After successful integration, MPD patients function much better than before, and can be released from the mental health system.     

Masochistic personality disorder. A prototype analysis of diagnosis and sex bias

The Work Group of the American Psychiatric Association to revise DSM-III in 1985 proposed a new personality disorder titled Masochistic Personality Disorder (MPD). This study concerns the clinical relevance and possible sex bias of MPD. The study was performed with clinicians who analyzed 15 case histories, five of which represented masochistic personality. The results led to the rejection of two hypotheses: a) masochistic personalities can be subsumed under existing DSM-III categories and b) there is a sex bias in the diagnostic use of MPD.     

Suicide and parasuicide in multiple personality disorder

Multiple personality disorder (MPD) has been diagnosed with increasing frequency in the 1980s: according to one estimate 6,000 cases have now been diagnosed in North America (Coons 1986). The diagnosis of MPD can be difficult because patients usually present in a polysymptomatic fashion, and the specific features of their dissociative disorder may be difficult to elicit (Kluft 1985a, 1987). One of the most common presenting features consists of suicidal ideation and suicide attempts. Putnam et al. (1986), for instance, noted suicidality as a presenting symptom in nearly 70% of 100 cases of MPD reported to them by 92 clinicians throughout North America. We have collected a series of 236 cases of MPD reported to us by 203 clinicians throughout North America. Our results show that 72% of the patients attempted suicide. The purpose of this report is to compare 48 cases of MPD from this series with no previous suicide attempts to 167 cases that have attempted suicide to determine features that differentiate the patients who attempt suicide from those who do not.     

Systemic treatment of multiple personality: response to a chronic disorder

Multiple Personality Disorder (MPD) is a more and more frequently diagnosed disorder. In this article, MPD is considered the result of a dissociative defense in response to severe trauma during the formative period of personality formation. As the child dissociates to defend against the trauma, the fragments of personality develop as separate entities. The traditional focus of therapy is integration, or fusion of the various fragments of personality. The current article does not dispute this therapeutic goal, but does offer an alternative treatment process. Borrowing from the theoretical concepts of the family therapy literature, the person with MPD is described as a system. Therapy, then, must attempt to maintain balance within the system as a short-term goal, as well as striving for integration as a long-term goal. This article delineates the systemic approach, first from a theoretical, then a practical perspective. The concepts of coconsciousness (or awareness by all aspects of the system) and coexistence (a state of mutual cooperation between various personalities) are described, and fitted within the systemic model. Practical aspects of life with MPD, including activities of daily living and relationships, are then outlined within this model.     

Professional skepticism about multiple personality

Therapists who have treated patients with multiple personality disorder (MPD) were surveyed about professional skepticism regarding the existence of MPD. Of these therapists, 78% reported that they had encountered intense skepticism from fellow professionals. Much of this skepticism appears to be explainable in terms of a) the lengthy decline of psychiatry's interest in dissociation, b) underappreciation of the prevalence of individuals with dissociative ability, and c) misconceptions about the natural clinical presentation of patients with MPD. These factors, however, could not explain the behavior of those skeptics who deliberately interfered with the clinical care of patients and who engaged in repeated acts of harassment against the patient and/or therapist. Half of the survey respondents reported that they had encountered these latter forms of extreme skepticism.     

Multiple personality disorder in Japan

The aim of this study was to determine whether the features of multiple personality disorder (MPD) in Japan are similar to those in North America, although a wide disparity exists in the prevalence of MPD between the two areas. In order to describe the features of MPD in Japan, we obtained clinical data from MPD case reports, including two of our own cases, published in Japanese academic journals and compared it with the data from other countries. The cases in Japan differed significantly from those in North America in the mean number of personalities and prevalence of sexual and/or physical abuse.     

Onset of Gilles de la Tourette's syndrome before 1 year of age

The authors report on three patients in North Dakota with an apparent onset of Gilles de la Tourette's syndrome before 1 year of age. Infantile onset may occur in 4.1% of the child patients with Tourette's disorder in that state. It is suggested that the diagnostic criteria for Tourette's disorder be revised to include patients who develop the illness before they are 1 year old.     

Kidney transplantation and liaison psychiatry, part II: A case of dissociative identity disorder

Abstract  The authors examined the case of an adolescent patient with dissociative identity disorder secondary to psychological shock of a transplant rejection response. Psychiatric symptoms consisted ot three components: visual hallucinations and delusions as a psychological defense against the anxiety of a transplant rejection; appearance of three personalities including proper self, the dead child (donor), and a prophet with strong predicting power; and a twilight state. These psychiatric symptoms may have been related to two psychological factors; immature personality characteristics formed during hemodialysis, and post-traumatic stress caused by a chronic rejection reaction from the patient's first transplant.     

Hypnosis on a consultation-liaison service

The use of hypnosis was demonstrated on a psychiatric consultation-liaison service (CLS) in a broad spectrum of medically hospitalized patients. Hypnosis was employed as an adjuvant measure to traditional medical and psychologic treatment modalities. Tapes for autohypnosis were used for reinforcement. Twenty-nine women and eight men from 24 to 75 years of age were hypnotized for relief of depression, pain, anxiety, or side-effects from chemotherapy. Results were excellent (total to almost total relief of symptoms) in 68% of the patients, fair in 22%, and poor in 11% with no differences among the results with the various conditions. This report demonstrates that hypnotherapy can be an extremely useful tool in the medical management of patients on a CLS.     

Methylphenidate therapy in 141 patients with hyperkinetic disorder or with pervasive developmental disorder and hyperkinesia

The efficacy and adverse reactions produced by methylphenidate (MPD) therapy were evaluated in 141 patients with hyperkinetic disorder or pervasive developmental disorder (PDD) with hyperkinesia. Ninety-nine patients were followed for 1 to 5 years to determine if the treatment could be continued and if the patients' adaptation to their environment improved. The results showed that the MPD therapy was effective in 93% of patients whose IQ was > 80 and in 70% whose IQ was < or = 80. The efficacy was not significantly different between patients with PDD and those without PDD. Of the patients in whom the MPD therapy was effective, the majority received a MPD dosage of 0.3 mg/kg once every morning. Adverse reactions, such as excitability, nausea or anorexia, and insomnia were reported in 23% of the patients. Although this figure was not negligible, no serious events occurred. Seizure induction was suspected in 2 patients. Many of the patients (53/83) in whom the MPD treatment was effective continued to receive the treatment throughout the follow-up period. By the time that the conditions were alleviated to the extent that the treatment could be stopped, the patients had become well adapted to their environment. However, in many other cases, adaptation was unsatisfactory. In these cases, psycosocial interventions were necessary, even if the MPD therapy was effective.     

Onset of obsessive-compulsive disorder in pregnancy.

OBJECTIVE: Although the role of pregnancy and childbirth in postpartum psychosis and depression has been studied, the association between pregnancy and obsessive-compulsive disorder has not been specifically addressed. The authors evaluated the role of pregnancy in the onset of obsessive-compulsive disorder. METHOD: Female patients with obsessive-compulsive disorder (N = 106) completed a questionnaire assessing age at onset of symptoms, marital status, number of children, age at each pregnancy, and life events associated with the onset of obsessive-compulsive disorder. RESULTS: Of the 106 women, 42 were childless and 59 had at least one child each; five others were also childless but had had abortions (N = 4) or a miscarriage (N = 1). Of the 42 women without children, 12 (28.6%) had first experienced obsessive-compulsive symptoms between the ages of 13 and 15 years, but there were two peaks of onset for the women with children: ages 22-24 and 29-32 years. Of the 59 patients with children, 23 (39.0%) had experienced symptom onset during pregnancy; this was the first pregnancy for 12, the second pregnancy for eight, and the third pregnancy for three. Four of the five women who had had abortions or a miscarriage had experienced the onset or an exacerbation of obsessive-compulsive symptoms during pregnancy. CONCLUSIONS: The association between pregnancy and the onset of obsessive-compulsive symptoms in these female patients highlights the need for further research on psychological and biological factors associated with pregnancy and obsessive-compulsive disorder.     

Acute stress disorder and posttraumatic stress disorder in children and adolescents involved in assaults or motor vehicle accidents

OBJECTIVE: The authors investigated acute stress disorder and later posttraumatic stress disorder (PTSD) in children and adolescents who had been involved in assaults or motor vehicle accidents. METHOD: They interviewed 93 patients 10-16 years old who were seen in an emergency department for having been assaulted or involved in a motor vehicle accident within 4 weeks after the assault or accident to assess acute stress disorder. At 6 months, they reinterviewed 64 (68.8%) of the patients to assess PTSD. RESULTS: At initial interview, 18 (19.4%) of the 93 patients had acute stress disorder and 23 (24.7%) met all acute stress disorder criteria except dissociation. At 6 months, eight of the 64 patients (12.5%) had PTSD. Acute stress disorder and PTSD did not differ in prevalence between patients who had been assaulted and those who had been in accidents. Sensitivity and specificity statistics and regression modeling revealed that the diagnosis of acute stress disorder was a good predictor of later PTSD but that dissociation did not play a significant role. CONCLUSIONS: Acute stress disorder has merit as a predictor of later PTSD in children and adolescents, but dissociation has questionable utility.     

Return of symptoms after discontinuation of clomipramine in patients with obsessive-compulsive disorder

To evaluate the need for maintenance drug therapy in patients with obsessive-compulsive disorder, the authors assessed 21 patients with obsessive-compulsive disorder who manifested sustained improvement during 5 to 27 months of clomipramine treatment and who agreed to participate in a double-blind discontinuation study. Of 18 patients who completed the study, 16 had substantial recurrence of obsessive-compulsive symptoms by the end of the 7-week placebo period. In addition, 11 had a significant increase in depressive symptoms. Treatment duration before discontinuation of clomipramine was not related to the frequency or severity of obsessive-compulsive or depressive symptom appearance. These findings suggest that prolonged drug treatment may be warranted for obsessive-compulsive disorder.