Antisocial personality disorder, conduct disorder, and substance abuse in schizophrenia

DSM-5 conduct disorder and symptoms in youths at high risk of psychosis in Kenya with DSM-5 mental disorders and substance use: towards integrated management

Little is known about the prevalence of Conduct Disorder (CD) and symptoms of CD in high risk psychosis persons at both clinical and community populations in LMICs and in particular Kenya. This study aimed to document (1) the prevalence of CD diagnosis and symptoms in youth who screened positive for psychosis and (2) the associated mental disorders and substance use in the same cohort in LMIC. The sample size was 536 students who had screened positive on the Washington Early Recognition Center Affectivity and Psychosis (WERCAP) from a population of 9,742 high school, college and university students, but had not converted to a psychotic disorder. We collected data on socio-demographic characteristics and used the following tools: Economic indicators tool; the Diagnostic Interview Schedule (DIS) tool for DSM-5 diagnosis; World Health Organization (WHO) Alcohol, Smoking, and Substance Involvement Screening Test (ASSIST). Basic descriptive statistics, chi-square test, Fisher's exact test, Pearson correlation and Poisson regression were conducted. Five percent (5%) of the respondents met the criteria for DSM-5 CD. Indeterminate CD comprised 10.1%. Male gender, all substances except hallucinogens lifetime, obsessive compulsive disorder, psychosis, agoraphobia, social phobia, drug abuse/dependence, antisocial personality disorder, oppositional defiant disorder, suicidality, WERCAP screen for bipolar disorder and WERCAP screen for schizophrenia were significantly (p < 0.05) associated with CD. Deceitfulness or theft criteria symptoms showed that CD had no significant gender difference. Criteria symptoms in aggression to people and animals, destruction of property and serious violations of rules were more common among males. Our findings suggest the need to screen for and diagnose CD, mental disorders and substance use in high risk psychosis youths in Kenya. This will inform integrated management.

Psychopathy subdomains in violent offenders with and without a psychotic disorder

BACKGROUND

Violence in psychosis has been linked to antisocial behavior and psychopathy traits. Psychopathy comprises aspects of interpersonal, affective, lifestyle, and antisocial traits which may be differently involved in violent offending by persons with psychotic disorders. We explored psychopathy subdomains among violent offenders with and without a psychotic disorder.

METHODS

46 males, with a history of severe violence, with (n = 26; age 35.85 ± 10.34 years) or without (n = 20; age 39.10 ± 11.63 years) a diagnosis of a psychotic disorder, were assessed with the Psychopathy Checklist-Revised (PCL-R). PCL-R was split into subdomains following the four-facet model. Group differences in total and subdomain scores were analyzed with a general linear model with covariates.

RESULTS

Total PCL-R scores did not differ between the groups (p = 0.61, Cohen's d = 0.17). The violent offenders without psychotic disorders had higher facet 2 scores than the patient group with psychotic disorders (p = 0.029, Cohen's d = 0.77). Facet 1, 3, or 4 scores did not differ between the groups. Controlling for age did not alter the results.

CONCLUSION

Patients with a psychotic disorder and a history of severe violence have lower affective psychopathy scores than violent offenders without psychotic disorders. This observation may point toward distinct underlying mechanisms for violence and may provide a target for focused treatment and prevention.

Individuals with schizophrenia who act violently towards others profit unequally from inpatient treatment-Identifying subgroups by latent class analysis

BACKGROUND

People with schizophrenia show a higher risk of committing violent offenses. Previous studies indicate that there are at least three subtypes of offenders with schizophrenia.

OBJECTIVES

Employing latent class analysis, the goals of this study were to investigate the presence of homogeneous subgroups of offender patients in terms of remission in psychopathology during inpatient treatment and whether or not these are related to subtypes found in previous studies. Results should help identify patient subgroups benefitting insufficiently from forensic inpatient treatment and allow hypotheses on possibly more suitable therapy option for these patients.

METHODS

A series of latent class analyses was used to explore extensive and detailed psychopathological reports of 370 offender patients with schizophrenia before and after inpatient treatment.

RESULTS

A framework developed by Hodgins to identify subgroups of offenders suffering from schizophrenia is useful in predicting remission of psychopathology over psychiatric inpatient treatment. While "early starters" were most likely to experience remission of psychopathology over treatment, "late late starters" and a subgroup including patients from all three of Hodgins' subgroups in equal proportions benefited least. Negative symptoms generally seemed least likely to remit.

CONCLUSION

Psychiatric treatment may have to be more tailored to offender patient subgroups to allow them to benefit more equally.

Different needs in patients with schizophrenia spectrum disorders who behave aggressively towards others depend on gender: a latent class analysis approach

BACKGROUND

There is limited research with inconsistent findings on differences between female and male offender patients with a schizophrenia spectrum disorder (SSD), who behave aggressively towards others. This study aimed to analyse inhomogeneities in the dataset and to explore, if gender can account for those.

METHODS

Latent class analysis was used to analyse a mixed forensic dataset consisting of 31 female and 329 male offender patients with SSD, who were accused or convicted of a criminal offence and were admitted to forensic psychiatric inpatient treatment between 1982 and 2016 in Switzerland.

RESULTS

Two homogenous subgroups were identified among SSD symptoms and offence characteristics in forensic SSD patients that can be attributed to gender. Despite an overall less severe criminal and medical history, the female-dominated class was more likely to receive longer prison terms, similarly high antipsychotic dosages, and was less likely to benefit from inpatient treatment. Earlier findings were confirmed and extended in terms of socio-demographic variables, diseases and criminal history, comorbidities (including substance use), the types of offences committed in the past and as index offence, accountability assumed in court, punishment adjudicated, antipsychotic treatment received, and the development of symptoms during psychiatric inpatient treatment.

CONCLUSIONS

Female offender patients with schizophrenia might need a more tailored approach in prevention, assessment and treatment to diminish tendencies of inequity shown in this study.

Determinants of burden in caregivers of patients with exacerbating schizophrenia

Purpose

Restriction in involuntary hospital admission and reduced lengths of inpatient stay increase burden on relatives of individuals with schizophrenia. This study aims at assessing the relationship between caregiver burden and behavioural disturbances of the affected, e.g. threats, nuisances, but also substance use and aggression. Two weeks before the last hospitalisation of the affected are considered as being the most burdensome period for relatives.

Subjects and methods

Sixty-four relatives of schizophrenic patients were assessed by the semi-structured “Interview for Measuring the Burden on the Family”. Subscales and total scales of burden were calculated. Predictors were identified by regression analyses.

Results

The most important predictor of burden is burden in the relationship between caregiver and the affected representing the changes in the relationship occurring in acute illness. Threats, nuisances, time spent with the affected, and burden due to restricted social life and leisure activities were additional predictors, but not aggression or substance abuse. Eighty-five percent of the cases could be assigned correctly.

Discussion and conclusions

To better encounter burden, relatives should learn to cope with disturbing behaviour of and altered relationship to the affected, but also with their own needs. Finally, relatives must be included in the decision whether or not an affected person should be hospitalised.

Demographic and clinical correlates of substance use disorders in first episode psychosis

BACKGROUND

We assessed the prevalence and correlates of lifetime substance use disorders in people with first episode psychosis using the baseline data from the Recovery After an Initial Schizophrenia Episode (RAISE) Early Treatment Program study.

METHODS

Research staff assessed 404 first episode patients at 34 community mental health centers across the United States with the Structured Clinical Interview for DSM-IV for diagnoses of psychotic and substance use disorders. Logistic regression was used to evaluate the relationships between participant characteristics and lifetime substance use disorders, followed with generalized linear mixed-effects regression models to identify unique predictors of lifetime substance use disorders.

RESULTS

Approximately one-third of participants reported recent alcohol use (36.6%) and cannabis use (30.7%), and one half (51.7%) met criteria for any lifetime alcohol or drug use disorder. Lifetime substance use disorders were associated with male gender, White race, higher excited (hyperactivity, mood lability, impulsivity, hostility, and uncooperativeness), psychotic and depressive symptoms, less impaired cognition, and greater perceived stigma. Gender, race, and excited symptoms were the most consistent unique predictors of lifetime substance use disorders found in multivariate analyses.

CONCLUSIONS

Half of first episode psychosis patients have co-occurring substance use disorders, which are associated with both more severe symptoms and greater perceptions of stigma. Programs aiming to serve these patients must have the skills and clinical strategies to help people with these unique characteristics.

A Comparative Study of Nurses as Case Manager and Telephone Follow-up on Clinical Outcomes of Patients with Severe Mental Illness

BACKGROUND

Providing community-based mental health services is crucial and is an agreed plan between the Iranian Mental Health Office and the Regional Committee for the Eastern Mediterranean (affiliated with WHO). The aim of this study was to determine the effectiveness of home-visit clinical case-management services on the hospitalization rate and other clinical outcomes in patients with severe mental illness.

METHODS

A total of 182 patients were randomly allocated into three groups, namely, home-visit (n=60), telephone follow-up (n=61) and as-usual care (n=61) groups. Trained nurses as clinical case-managers provided home-visit services and the telephone follow-up tasks. Hospitalization rate as a measure of recurrence, as well as burden, knowledge, general health condition of caregivers with positive/negative symptoms, satisfaction, quality of life, and social skills of the consumers were assessed as the main and secondary outcomes, respectively.

RESULTS

Most clinical variables were improved in both intervention groups compared with the control group. During the one year follow-up, the rate of rehospitalization for the telephone follow-up and as-usual groups were respectively 1.5 and 2.5 times higher than the home-visit group.

CONCLUSION

Trained clinical case-managers are capable of providing continuous care services to patients with severe mental illness. The telephone follow-up services could also have beneficiary outcome for the consumers, their caregivers, and the health system network.

Psychiatric Comorbidity in Patients from the Addictive Disorders Assistance Units of Galicia: The COPSIAD Study

The objective of this study is to assess the prevalence of psychiatric comorbidity in patients under treatment within the addictive disorders assistance units of Galicia (Spain).

MATERIAL AND METHODS

A total of 64 healthcare professionals performed clinical diagnosis of mental disorders (on DSM IV-TR criteria) in 2300 patients treated throughout March 2010 in 21 addictive disorders assistance units.

RESULTS

56.3% of patients with substance abuse/dependency also showed some other mental disorder, 42.2% of patients suffering from at least an Axis I condition and 20.2% from some Axis II condition. Mood and anxiety disorders and borderline and antisocial personality disorders were the most frequent disorders in both axes.

CONCLUSIONS

A high comorbidity was found between mental and substance use disorders (SUD) in patients seen at the addictive disorders assistance units of Galicia.

Family history of schizophrenia as a risk factor for axis I psychiatric conditions

People with first-degree relatives with schizophrenia are at an elevated risk of developing the disorder themselves. High rates of psychotic symptoms in non-psychotic disorders, high rates of comorbidity in psychotic disorders, and diversity of outcomes following psychosis-risk states together suggest that this vulnerability may be for psychiatric conditions in general, not limited to schizophrenia. In this study, data from the National Survey of American Life (NSAL) were used to examine the association between having a first-degree relative with schizophrenia and the lifetime development of a range of non-psychotic axis I psychiatric disorders using adjusted odds ratios. Having a relative with schizophrenia was associated with increased risk for most non-psychotic psychiatric conditions examined, including those expected to be associated with schizophrenia (affective, anxiety, and substance use disorders) and those not expected (bulimia, disorders of childhood onset), excluding respondents with lifetime psychotic symptoms and controlling for demographic factors. Family history of schizophrenia among this predominantly African-American and Afro-Caribbean sample appears to be a risk factor for a range of axis I diagnoses, supporting a continuous rather than categorical nature of psychiatric vulnerability. Future studies should examine whether these associations are due to genetic or environmental factors, or both.

Is it time to consider comorbid substance abuse as a new indication for antipsychotic drug development?

Comorbid drug abuse in schizophrenia has been consistently reported as high, with estimates ranging between 10-70%. Comorbid addictive states in schizophrenia are possibly multifactorial, yet recent research assigns a significant neurobiological role in its genesis. Abnormalities in hippocampal/cortical function in schizophrenia which mediate reward and reinforcement behavior are identified as central to the development and maintenance of comorbid addictive states. Preliminary data suggest that the vulnerability of patients with schizophrenia to substance use disorders may be a primary disease symptom. The management of comorbid substance abuse in schizophrenia relies on the use of antipsychotic medications. Recent data raise the concern about whether first-generation antipsychotics in long-term use can conversely lead to enhancement of the abused substance's reinforcing properties. Some recent reports have assigned a favorable outcome to clozapine and second-generation antipsychotics, pointing to a possible differential role for various antipsychotics. In view of the high prevalence of comorbid drug abuse in schizophrenia, its impact on outcome of treatment and the recent emerging neurobiological information, it is my contention that comorbid drug abuse constitutes a dimension by itself and deserves to receive an indication in the development of new antipsychotics similar to negative symptoms or cognitive deficits.

Antisocial Personality Disorder in People with Co-Occurring Severe Mental Illness and Substance Use Disorders: Clinical, Functional, and Family Relationship Correlates

Antisocial personality disorder (ASPD) is an important correlate of substance abuse severity in the addiction population and in people with co-occurring serious mental illness and addiction. Because family members often provide vital supports to relatives with co-occurring disorders, this study explored the correlates of ASPD in 103 people with co-occurring disorders (79% schizophrenia-schizoaffective, 21% bipolar disorder) in high contact with relatives participating in a family intervention study. Clients with ASPD were more likely to have bipolar disorder and to have been married, but less likely to have graduated from high school. ASPD was associated with more severe drug abuse and depression, worse functioning, and less planning-based social problem solving. The relatives of clients with ASPD also reported less planning-based problem solving, worse attitudes towards the client, and worse mental health functioning. Client ASPD was associated with less long-term exposure to family intervention. The findings suggest that clients with ASPD in addition to co-occurring disorders are a particularly disadvantaged group with greater illness severity, more impaired functioning, and more strained family relationships. These difficulties may pose special challenges to delivering family intervention for this group.

Resting EEG deficits in accused murderers with schizophrenia

Empirical evidence continues to suggest a biologically distinct violent subtype of schizophrenia. The present study examined whether murderers with schizophrenia would demonstrate resting EEG deficits distinguishing them from both non-violent schizophrenia patients and murderers without schizophrenia. Resting EEG data were collected from five diagnostic groups (normal controls, non-murderers with schizophrenia, murderers with schizophrenia, murderers without schizophrenia, and murderers with psychiatric conditions other than schizophrenia) at a brain hospital in Nanjing, China. Murderers with schizophrenia were characterized by increased left-hemispheric fast-wave EEG activity relative to non-violent schizophrenia patients, while non-violent schizophrenia patients instead demonstrated increased diffuse slow-wave activity compared to all other groups. Results are discussed within the framework of a proposed left-hemispheric over-processing hypothesis specific to violent individuals with schizophrenia, involving left hemispheric hyperarousal deficits, which may lead to a homicidally violent schizophrenia outcome.

Program planning and staff competencies for forensic assertive community treatment: ACT-eligible versus FACT-eligible consumers

PURPOSE

Forensic assertive community treatment (FACT) is a recent adaptation of the assertive community treatment (ACT) model; however, more information is needed about how FACT and ACT consumers differ and how FACT should be modified to accommodate these differences.

METHOD

Linked, multisystem administrative data from King County, Washington, were used to compare the demographic, clinical, and criminal justice characteristics of ACT- and FACT-eligible consumers.

RESULTS

FACT consumers were more likely to be male, persons of color, and had more complex clinical profiles. Also, some FACT consumers were incarcerated for sex offenses, and more than half had violent offenses.

CONCLUSIONS

Traditionally, ACT teams avoid serving consumers with personality disorders, violent consumers, and sex offenders; however, given increased use of mandated outpatient treatment and mental health courts, FACT teams may have less discretion to choose whom they serve. The addition of clinical interventions and other modifications may be particularly important for FACT teams.

Case-management for patients with schizophrenia in Iran: a comparative study of the clinical outcomes of Mental Health Workers and Consumers' Family Members as case managers

The objective of this study was to evaluate the effectiveness of case-management services and the feasibility of considering the Consumers' Family Members (CFM) as service providers in Iran as a developing country. Three trained case-managers were allocated into each group (Mental Health Worker-MHW and CFM), providing 12 months of home-visit services for 129 individuals with schizophrenia. Burden, knowledge, quality of life and the general health condition of the caregivers, as well as positive/negative symptoms and social skills of the consumers were evaluated. Most clinical variables were improved without significant differences between groups. The hospitalization rate was reduced by 67%.

Use of integrated dual disorder treatment via assertive community treatment versus clinical case management for persons with co-occurring disorders and antisocial personality disorder

We conducted secondary analyses of data from a randomized trial testing the effectiveness of Assertive Community Treatment (ACT) in delivery of integrated dual disorder treatment (IDDT) to explore the impact of IDDT delivered through ACT teams compared with standard clinical case management for dually-disordered persons with and without antisocial personality disorder (ASPD). This analysis included 36 individuals with ASPD and 88 individuals without ASPD. Participants with ASPD assigned to ACT showed a significantly greater reduction in alcohol use and were less likely to go to jail than those in standard clinical case management, whereas participants without ASPD did not differ between the 2 case management approaches. There were no significant differences for other substance use or criminal justice outcomes. This study provides preliminary evidence that persons with co-occurring serious mental illness, substance use disorders, and ASPD may benefit from delivery of IDDT through ACT teams.

The prevalence of personality disorder in schizophrenia and psychotic disorders: systematic review of rates and explanatory modelling

BACKGROUND

Personality disorder (PD) in psychosis is poorly studied. As PD can affect outcome in mental disorders, it is important to understand its prevalence in order to plan services, understand prognosis more fully and maximize management options. MethodLiterature searching revealed 3972 potential papers. Twenty papers including 6345 patients were included in the final analysis. There was great variation in prevalence and multilevel modelling was used to identify possible reasons for this heterogeneity.

RESULTS

The prevalence of PD varied from 4.5% to 100%. Multilevel analysis suggested country of study, study type, the instruments used to diagnose PD and patient care correlated with the prevalence data explaining the study level heterogeneity, with 34.2, 33.4, 17.0 and 4.5% by each variable respectively. Personality studies in Canada and Sweden reported lower PD prevalence, whereas in Spain it was higher than the multinational study. Compared with randomized controlled trials, case-control studies reported lower prevalence [odds ratio (OR)=0.35, 95% confidence interval (CI) 0.15-0.79] and observational studies higher prevalence (OR 70.5, 95% CI 8.5-583). Primary-care patients were less likely to be diagnosed (OR 0.02, 95% CI 0-0.19) than hospital patients, and out-patients had higher prevalence (OR 12.5, 95% CI 1.77-88.6).

CONCLUSIONS

The reported prevalence of PD in schizophrenia varies significantly. Statistical modelling suggests care, country, study type and diagnostic tools for PD all bias prevalence rates. The number of papers reaching the inclusion criteria, the relative paucity of information and the difficulties in developing an accurate statistical model limited interpretation from the study.

From conduct disorder to severe mental illness: associations with aggressive behaviour, crime and victimization

BACKGROUND

Conduct disorder (CD) prior to age 15 has been associated with an increased risk of aggressive behaviour and crime among men with schizophrenia. The present study aimed to replicate and extend this finding in a clinical sample of severely mentally ill men and women.

METHOD

We examined a cohort of in-patients with severe mental illness in one mental health trust. A total of 205 men and women participated, average age 38.5 years. CD was diagnosed using a structured diagnostic tool. Alcohol and illicit drug use, aggressive behaviour and victimization were self-reported. Information on convictions was extracted from official criminal records. Analyses controlled for age and sex.

RESULTS

CD prior to age 15 was associated with an increased risk of assault over the lifespan [odds ratio (OR) 3.98, 95% confidence interval (CI) 1.87-8.44)], aggressive behaviour in the 6 months prior to interview (OR 2.66, 95% CI 1.24-5.68), and convictions for violent crimes (OR 3.19, 95% CI 1.46-6.97) after controlling for alcohol and illicit drug use. The number of CD symptoms present prior to age 15 significantly increased the risk of serious assaults over the lifespan, aggressive behaviour in the past 6 months, and violent crime after controlling for alcohol and illicit drug use.

CONCLUSIONS

Men and women with severe mental illness who have a history of CD by mid-adolescence are at increased risk for aggressive behaviour and violent crime. These patients are easily identifiable and may benefit from learning-based treatments aimed at reducing antisocial behaviour. Longitudinal, prospective investigations are needed to understand why CD is more common among people with than without schizophrenia.

Acting on harmful command hallucinations in psychotic disorders: an integrative approach

Although harmful command hallucinations have been linked to violent behavior, few studies have examined factors mediating this relationship. The principal aim of this study was to examine a range of factors potentially associated with acting on harmful command hallucinations using a multivariate approach. The sample comprised 75 participants drawn from community and forensic services. Measures assessing characteristics of the command hallucination and the hallucinator, including forensic risk factors, were administered. Using ordinal logistic regression, we found compliance to be associated with increasing age, viewing the command hallucination as positive, congruent delusions, and reporting low maternal control in childhood. Antipsychotic medication was protective while, contrary to expectations, traditional predictors of violence reduced the odds of compliance with command hallucinations viewed as threatening. The findings suggest that compliance with harmful commands is driven by a complex interaction between beliefs related to the command hallucination and personal characteristics, with risk of compliance increasing with age.

Normal personality characteristics in schizophrenia: a review of the literature involving the FFM

Schizophrenia is generally viewed as a disruption of normal functioning because of an underlying core illness. A number of theorists have speculated that this core illness may unilaterally disrupt normal personality functioning. However, recent data suggests that the relationship may be more complex and reciprocal than previously conceptualized. Furthermore, basic personality characteristics appear to be associated with numerous clinical phenomena. This article reviews the empirical literature pertaining to normal personality characteristics [structured around the five-factor model (FFM) of personality] in individuals with schizophrenia. Evidence suggests that certain personality characteristics may be uniquely related to the etiology of psychosis, as well as symptom severity, occupational functioning, cigarette smoking, substance use and violent behavior, social isolation, and suicidality in patients with schizophrenia. The implications of these findings and suggestions for future research are discussed.

The vulnerability to alcohol and substance abuse in individuals diagnosed with schizophrenia

Individuals with schizophrenia are at increased risk for developing substance abuse disorders. Here, we consider factors that might elevate their risk for substance abuse. The tendency among schizophrenic individuals to overvalue drug-like rewards and to devalue the potential negative consequences of substance abuse may be a contributing factor to their substance abuse risk. This bias, which may partly reflect the convergence of glutamatergic and dopaminergic input to the limbic striatum, also may contribute to disadvantageous decision-making and other impulsive behavior. This propensity to seek drug-like rewards is augmented by alterations in nicotinic cholinergic, GABAergic, glutamatergic, and cannabinnoid receptor function associated with schizophrenia that increase the abuse liability of low doses of nicotine, ethanol, and perhaps cannabis, and augment the dysphoric effects of higher doses of ethanol and cannabis. The distortions in reward processing and altered response to substances of abuse also increase the likelihood that individuals with schizophrenia will self-medicate their subjective distress with abused substances. The focus on distinctions between motivation and reward with respect to substance abuse risk by schizophrenic patients suggests a need for a reconsideration of the construct of "negative symptoms" for this dually-diagnosed patient group.

Reasons for increased substance use in psychosis

Around half of all patients with schizophrenia are thought to abuse drugs or alcohol and there is good evidence to suggest that they have poorer outcomes than their non substance using counterparts. However, despite more than twenty years of research there is still no consensus on the aetiology of increased rates of substance use in people with psychosis. There is a clear need to understand the reasons for such high rates of substance use if treatments designed to help patients abstain from substance use are to be successful. This paper provides an update of the literature examining the reasons for substance use by people with psychosis, and includes a comprehensive review of the self report literature. The main theories as to why people with psychosis use substances are presented. There is evidence to suggest that cannabis may have a causal role in the development of psychopathology but not for other substances. The self report literature provides support for an 'alleviation of dysphoria' model of substance use but there is little empirical support for the self medication hypothesis, or for common factor models and bidirectional models of comorbidity. It is likely that there are multiple risk factors involved in substance use in psychosis and more work to develop and test multiple risk factor models is required.

Conduct disorder and antisocial personality disorder in persons with severe psychiatric and substance use disorders

Conduct disorder (CD) and antisocial personality disorder (ASPD) are established risk factors for substance use disorders in both the general population and among persons with schizophrenia and other severe mental illnesses. Among clients with substance use disorders in the general population, CD and ASPD are associated with more severe problems and criminal justice involvement, but little research has examined their correlates in clients with dual disorders. To address this question, we compared the demographic, substance abuse, clinical, homelessness, sexual risk, and criminal justice characteristics of 178 dual disorder clients living in 2 urban areas between 4 groups: No CD/ASPD, CD Only, Adult ASPD Only, and Full ASPD. Clients in the Adult ASPD Only group tended to have the most severe drug abuse severity, the most extensive homelessness, and the most lifetime sexual partners, followed by the Full ASPD group, compared with the other 2 groups. However, clients with Full ASPD had the most criminal justice involvement, especially with respect to violent charges and convictions. The results suggest that a late-onset ASPD subtype may develop in clients with severe mental illness secondary to substance abuse, but that much criminal behavior in clients with dual disorders may be due to the early onset of the full ASPD syndrome in this population and not the effects of substance use disorders.

Putting community risk in perspective: a look at correlations, causes and controls

Much research, but not all, appears to show that persons with severe mental illness are more dangerous and violent than others; but it is misleading and feeds the stigma cannon. This paper critically reviews reported correlations between severe mental illness and violence, examines their statistical confounds, highlights studies which seek causal mechanisms explaining the associations, points to what those causal mechanisms tell us about controlling risk in the community, and reviews legal attempts to control community risk in light of those causal mechanisms.

Substance use in persons with schizophrenia: baseline prevalence and correlates from the NIMH CATIE study

This study examined baseline correlates of substance use in the NIMH Clinical Antipsychotic Trials of Intervention Effectiveness project. Approximately 60% of the sample was found to use substances, including 37% with current evidence of substance use disorders. Users (with and without substance use disorders), compared with nonusers, were significantly more likely to be male, be African-American, have lower educational attainment, have a recent period of homelessness, report more childhood conduct problems, have a history of major depression, have lower negative symptom and higher positive symptom scores on the Positive and Negative Syndrome Scale, and have a recent illness exacerbation. Individuals with comorbid substance use disorders were significantly more likely to be male, report more childhood conduct problems, have higher positive symptom scores on the Positive and Negative Syndrome Scale, and have a recent illness exacerbation. These analyses suggest that substance use disorders in schizophrenia are especially common among men with a history of childhood conduct disorder problems and that childhood conduct disorder problems are potent risk factors for substance use disorders in schizophrenia.

The consequences of Conduct Disorder for males who develop schizophrenia: associations with criminality, aggressive behavior, substance use, and psychiatric services

Men with schizophrenia are at increased risk, as compared to the general population, for criminal offending and to have displayed Conduct Disorder (CD) before age 15. The present study examined the consequences of CD among a sample of 248 men with schizophrenia or schizo-affective disorder, aged, on average, 39 years old. Participants were intensively assessed at discharge from the hospital and four times during the subsequent two-year period. CD was associated with criminality and substance misuse among first-degree male relatives and substance misuse among female relatives. In childhood and adolescence, CD was associated with poor academic performance, substance abuse, and physical abuse. In adulthood, the diagnosis of CD and each CD symptom were associated with increased non-violent and violent criminal offending, after adjusting for life-time diagnoses of substance misuse disorders. CD was not associated with homicide. CD was associated with life-time diagnoses of alcohol and drug abuse and/or dependence. During the 24 month follow-up period, CD and the number of CD symptoms were associated with aggressive behavior, controlling for life-time diagnoses of substance use disorders, substance misuse measured objectively and subjectively, medication compliance, and obligatory care. CD was associated with an earlier age at onset of schizophrenia and at first admission to hospital, and with length of time spent in hospital. During the two-year follow-up period, neither the diagnosis of CD nor the number of CD symptoms was associated with levels of positive and negative symptoms assessed five times, compliance with medication, substance use, or readmission. The results are interpreted to suggest that CD is a distinct co-morbid disorder that runs parallel to the course of schizophrenia.

The impact of substance use disorders on clinical outcome in 643 patients with first-episode psychosis

OBJECTIVE

Studies investigating the impact of comorbid substance use disorders (SUD) in psychosis have tended to focus on cross-sectional data, with few studies examining the effects of substance use course on clinical outcome. The main aim of the present study was to assess the impact of baseline SUD and course of SUD on remission of positive symptoms.

METHOD

The Early Psychosis Prevention and Intervention Centre admitted 786 first-episode psychosis (FEP) patients between 1998 and 2000. Data on SUD and clinical outcome were collected from patients' medical records (MR) of 643 patients who met inclusion criteria.

RESULTS

Lifetime prevalence of SUD was 74%, with 62% having a SUD at baseline. This reduced to 36% in those patients who completed 18 months of treatment at the EPPIC program. A Cox regression analysis indicated that a decrease or cessation of substance use significantly increased the probability of remission, whilst persistent SUD substantially reduced the likelihood. In addition, patients who reduced use appeared to have better outcomes at 18 months than those patients who had never used substances. Baseline SUD was not found to have any significant influence on symptom remission.

CONCLUSION

Patients presenting with FEP have high rates of SUD. Effective management of psychosis within a specialized service is associated with reductions in SUD over the course of treatment, although persistent substance use is associated with non-compliance, treatment drop-out and poor remission rates. As such, young people with FEP and comorbid substance use should be offered integrated treatment that addresses both disorders.

Increased deep sleep in a medication-free, detoxified female offender with schizophrenia, alcoholism and a history of attempted homicide: case report

BACKGROUND

Psychiatric sleep research has attempted to identify diagnostically sensitive and specific sleep patterns associated with particular disorders. Both schizophrenia and alcoholism are typically characterized by a severe sleep disturbance associated with decreased amounts of slow wave sleep, the physiologically significant, refreshing part of the sleep. Antisocial behaviour with severe aggression, on the contrary, has been reported to associate with increased deep sleep reflecting either specific brain pathology or a delay in the normal development of sleep patterns. The authors are not aware of previous sleep studies in patients with both schizophrenia and antisocial personality disorder.

CASE PRESENTATION

The aim of the present case-study was to characterize the sleep architecture of a violent, medication-free and detoxified female offender with schizophrenia, alcoholism and features of antisocial personality disorder using polysomnography. The controls consisted of three healthy, age-matched women with no history of physical violence. The offender's sleep architecture was otherwise very typical for patients with schizophrenia and/or alcoholism, but an extremely high amount of deep sleep was observed in her sleep recording.

CONCLUSIONS

The finding strengthens the view that severe aggression is related to an abnormal sleep pattern with increased deep sleep. The authors were able to observe this phenomenon in an antisocially behaving, violent female offender with schizophrenia and alcohol dependence, the latter disorders previously reported to be associated with low levels of slow wave sleep. New studies are, however, needed to confirm and explain this preliminary finding.

Personality characterizations of outpatients with schizophrenia, schizophrenia with substance abuse, and primary substance abuse

The study extended previous research on the relationship between personality traits and Axis I disorders. It examined personality differences between individuals diagnosed with schizophrenia and substance abuse and also included individuals dually diagnosed with both schizophrenia and substance abuse. Comparisons were made with respect to characteristics of both normal personality, as measured by the NEO Five-Factor Inventory (NEO-FFI), and disordered personality, as measured by the Millon Multiaxial Personality Inventory. On the NEO-FFI, all groups differed significantly from the NEO-FFI normative sample on at least three personality domains. As predicted, the dual diagnosis group showed the most personality deviance and pathology. The schizophrenia group was primarily distinguished by higher levels of agreeableness, whereas the substance abuse group was more extroverted and showed a prominence of Cluster B personality patterns. An unexpected finding was an interaction between diagnostic group and age, such that older relative to younger individuals in the single diagnosis groups showed greater personality adaptivity and moderation, whereas older individuals in the dual diagnosis group showed less.

Confirmatory Factor Analysis of the Psychopathy Checklist: Screening Version in Offenders With Axis I Disorders

One hundred forty-nine inpatients within a maximum security psychiatric facility were assessed with the Psychopathy Checklist: Screening Version (PCL:SV; S. D. Hart, D. N. Cox, & R. D. Hare, 1995). Within the total sample, 68% had a psychotic disorder and 30% met criteria for psychopathy. Using confirmatory factor analysis, the authors tested the 2-factor PCL:SV model of psychopathy and recent 3- and 4-factor models. Results indicated good fit for each model, with the 4-factor model showing best overall fit. Structural equation modeling was used to determine which psychopathy factors predicted 6-month follow-up of inpatient aggression. The 2-, 3-, and 4-factor models, respectively, accounted for 16%.27%. and 3l% of the variance in aggression.

Demographic and clinical correlates of comorbid substance use disorders in psychosis: multivariate analyses from an epidemiological sample

BACKGROUND

While there has been substantial research examining the correlates of comorbid substance abuse in psychotic disorders, it has been difficult to tease apart the relative importance of individual variables. Multivariate analyses are required, in which the relative contributions of risk factors to specific forms of substance misuse are examined, while taking into account the effects of other important correlates.

METHODS

This study used multivariate correlates of several forms of comorbid substance misuse in a large epidemiological sample of 852 Australians with DSM-III-R-diagnosed psychoses.

RESULTS

Multiple substance use was common and equally prevalent in nonaffective and affective psychoses. The most consistent correlate across the substance use disorders was male sex. Younger age groups were more likely to report the use of illegal drugs, while alcohol misuse was not associated with age. Side effects secondary to medication were associated with the misuse of cannabis and multiple substances, but not alcohol. Lower educational attainment was associated with cannabis misuse but not other forms of substance abuse.

CONCLUSION

The profile of substance misuse in psychosis shows clinical and demographic gradients that can inform treatment and preventive research.

A comparison of schizophrenic patients with or without coexisting substance use disorder

Increasing numbers of research investigations have documented psychosocial, demographic, and treatment course differences between schizophrenic patients with and without additional substance use disorder. However, many of these studies have failed to control for additional psychiatric diagnoses. This study sought to elucidate differences between schizophrenic patients with versus without coexisting substance use disorder, while controlling for the possible confounding impact of additional Axis I or Axis II diagnoses. We explored the records of 308 psychiatric inpatients who were either solely diagnosed with schizophrenia or solely diagnosed with coexisting schizophrenia and substance use disorder. We compared these two groups on a variety of psychosocial, demographic, and clinical variables shown in prior research to differentiate these two types of patients. Findings revealed that substance use interacts with schizophrenia to increase psychiatric admissions and decrease lengths of stay upon admission. Findings also revealed that patients with coexisting substance use and schizophrenia have unique psychosocial and demographic presentations that reflect more challenging life circumstances. Differences were not revealed between groups in terms of legal and criminal involvement. Based on pure diagnostic groupings, findings indicate that an additional substance use disorder is associated with psychosocial, demographic, and treatment course differences among individuals with a schizophrenia diagnosis. When screening, developing treatment, and planning aftercare, it is crucial to not view individuals with schizophrenia diagnoses as a monolithic group, but rather to consider the presence of a substance abuse diagnosis; such consideration will increase the likelihood of appropriate treatment and successful outcomes.

The prediction of violent and nonviolent criminal behavior in a methadone maintenance population

The utility of traits associated with Antisocial Personality Disorder in making risk assessments of violent and nonviolent crimes was examined in 254 subjects sampled from a methadone maintenance population. A factor analysis of a number of baseline measures resulted in five factors measuring hostility, insecure attachment, impaired reality testing, antisocial personality, and empathy. These factors were used in logistic regression analysis to predict charges for violent and nonviolent crimes over a 2-year period. Individuals with high scores on the antisocial personality factor had an increased risk of both violent and nonviolent criminal charges. Individuals with low scores on the empathy factor were at high risk for violent crimes. In an analysis using the factor components rather than the factors, the measures of perspective-taking and a socialization were associated with violent criminal charges, and the measure of psychopathy, but not antisocial behavior, was associated with nonviolent criminal charges. The results support the use of measures of personality traits in addition to measures of a history of antisocial behavior in making violence risk assessments in substance-dependent patients. The DSM construct and diagnosis of Antisocial Personality Disorder may be enhanced by greater emphasis on personality traits associated with antisocial behavior.

Caregiver burden in recent-onset schizophrenia and spectrum disorders: the influence of symptoms and personality traits

Earlier studies that used two symptom dimensions indicate that the caregiver burden for patients with schizophrenia is significantly determined by their negative symptoms. The purpose of this study is to examine the relationship between symptom severity in recent-onset schizophrenia and caregiver burden in a more differentiated way (i.e., five-symptom dimensions). Based on previous research, which shows that patients' personality traits influence the course of schizophrenia, we theorize that personality traits could also influence caregiver burden. So far, this hypothesis has never been studied. Therefore, the second purpose of this study is to examine whether patients' personality traits would contribute to caregiver burden. The results of this study showed that the disorganization symptom component was the predicting variable of the subscales supervision, tension, urging, distress, and the overall amount of caregiver burden in a linear regression analysis. Personality traits of patients played no substantial role in caregiver burden. These findings suggest that psychoeducational programs should address the severity of disorganization symptoms to reduce caregiver burden in the early phase of schizophrenia.

Substance abuse and suicidality in schizophrenia: a common risk factor linked to impulsivity

Lifetime substance abuse comorbidity is frequent in schizophrenic patients, but the clinical correlates remain unclear. We have explored the chronological relations between substance abuse and course of schizophrenia, and compared several clinical characteristics and personality dimensions in 50 schizophrenic patients with or without lifetime substance abuse or dependence. Abuse occurred mainly after the first prodromal symptoms and just before the first psychotic episode. Substance-abusing patients were not different from non-substance-abusing patients on the Chapman Physical Anhedonia Scale, PANSS total score, negative subscore or depression item, CGI, treatment response and demographic variables. In contrast, substance-abusing patients had higher scores on the Barratt Impulsivity Scale (total, cognitive and non-planning scores) and had attempted suicide more often. In patients with schizophrenia, as in the general population, substance abuse or dependence appears associated with higher impulsivity and suicidality. High impulsivity could facilitate substance abuse as a maladaptive behavior in response to prodromal symptoms, precipitating the onset of a characterized psychosis.

Addiction and schizophrenia

Epidemiologic studies in the general population and those based on the clinical assessment of schizophrenic populations have revealed a high degree of overlap between schizophrenia and addictive disorders. The abuse of psychoactive substances (including alcohol) throughout life is so frequent (50%) that the possibility of a specific link inevitably arises. Various hypotheses have been suggested to explain the high co-morbidity between schizophrenia and addiction: 1) The social-environmental hypothesis has been developed but studies have provided poor evidence to validate it. 2) The possible shared biological vulnerability between schizophrenia and addictions led researchers to explore common genetic determinants and study the involvement of the dopaminergic and opioid systems in the aetiology of both schizophrenia and the abuse of and dependence on psychoactive drugs. 3) Finally, the theory of self-medication suggests that schizophrenics may be attempting to counter the deficit linked to their disorders by using the substances they take or their dependency-type behaviour to cope with their emotional problems. The clinical profile of schizophrenic addicts does seem to display some distinctive features, such as the high level of depressive co-morbidity, very high nicotine and alcohol dependence, with a very poor prognosis. These patients are difficult to manage; the possibility of pharmacologic interactions between the substances they are taking and neuroleptic medication calls for prudence, and their compliance is also poor. Addictive disorders in schizophrenics are currently a topic of active research intended to lead to identifying specific treatments. The early identification of addictive disorders in schizophrenics should make it possible to limit their development and improve the prognosis.

Toward a rational pharmacotherapy of comorbid substance abuse in schizophrenic patients

The prevalence of substance abuse is elevated among schizophrenic patients. When free of illicit substances and sober, substance-abusing schizophrenic patients may have a better prognosis than other frequently hospitalized schizophrenic patients. However, the cost of substance abuse is great in terms of rehospitalization, homelessness, risk of other medical illness, disruption of social and vocational function, exacerbation of symptoms, suicide, and increased health care expenses. Important recent developments in medications for reducing substance abuse in nonschizophrenic populations make it timely to consider factors that might contribute to substance abuse among schizophrenic patients. This review will focus on substances most frequently abused by schizophrenic patients: nicotine, alcohol, cannabis, and psychostimulants. It concentrates on two conceptual foci: "self-medication hypotheses" and "comorbid addiction vulnerability hypotheses". The relationship between these hypotheses and possible pharmacotherapeutic approaches for substance-abusing schizophrenic patients will be considered.

Examining an affect regulation model of substance abuse in schizophrenia. The role of traits and coping

Comorbid substance use disorders occur frequently in schizophrenia with significant detrimental effects to clinical outcome. Unfortunately, attempts to identify factors associated with comorbid substance use disorders (beyond demographic characteristics such as gender) have not been successful. This study examined an affect regulation model of comorbid substance use in schizophrenia with a focus on personality traits and coping. It was hypothesized that maladaptive coping and the traits of negative affect (NA) and disinhibition (DIS), but not trait positive affect (PA), would be associated with greater substance use problems. Thirty-nine patients with schizophrenia or schizoaffective disorder completed measures of personality traits, coping, and negative consequences associated with substance use. Traits were differentially associated with coping in that NA and DIS, but not PA, were associated with maladaptive coping including the use of drugs and alcohol to cope with stress. Alternatively, PA, but not DIS or NA, was related to adaptive coping strategies. Individuals high in NA and endorsing the use of drugs and alcohol to cope reported the greatest number of negative consequences from substance use. This finding held after controlling for gender. These results are consistent with an affect regulation model of substance use and suggest the advantage of examining the role of affect, traits, and coping in understanding comorbid substance use in schizophrenia.