A nationwide representative sample of treatment-seeking alcoholics: a study of psychiatric comorbidity

In order to elucidate the psychiatric comorbidity of patients in alcohol and other substance use disorder treatment we examined a representative sample of such patients in Iceland (249 men and 102 women). Over 70% of pure alcoholics and over 90% of polysubstance users had comorbid diagnoses, a prevalence higher than in the Epidemiological Catchment Area study in the United States, but similar to clinical studies from North America. The most prevalent disorders were: affective (33%), anxiety (65%), antisocial personality disorder (28%) and psychosexual dysfunction (20%). Pure alcoholics and polysubstance users in studies on psychiatric comorbidity should be separated. Anxiety and affective disorders influence treatment seeking. Findings concerning the impact of psychiatric comorbidity on course should be comparable between North America and Europe.     

Comorbidity of substance abuse and other psychiatric disorders in acute general psychiatric admissions: a study from Lebanon

This is the first published study from an Arab Near Eastern country to examine the comorbidity of substance abuse with other psychiatric disorders. All inpatients with substance abuse/dependence (present or past) admitted to the psychiatry unit at St. George Hospital (Lebanon) between 1979 and 1992 (N = 222) constituted the study sample. Of these, 64.9% were found to have comorbid psychiatric disorders with specific relations between individual substances and psychiatric diagnoses identified such as cocaine and bipolar disorder (42.1%), and cannabis and schizophrenia (44.8%). Patients with no axis I disorder were predominantly heroin users, most of them having antisocial personality disorder. Polydrug abuse was found among 44.9% of patients, and most of the benzodiazepine abusers belonged to this category. The pattern of comorbidity of psychiatric and substance use disorders in this Near East inpatient population compares well with findings from the Western hemisphere: cultural factors (including war) do not seem to have much of an effect on the different forms of dual diagnoses. This adds weight to the already existing literature on the need for careful psychiatric assessment in the treatment of substance abuse.     

Conduct disorder subtype and comorbidity.

BACKGROUND: Conduct disorder is considered difficult to treat, but comorbid psychiatric disorders may be a basis for treating some youths with conduct disorder. We sought to identify patterns of comorbid psychiatric diagnoses and psychopathology associated with conduct disorder by reported age-of-onset. METHODS: Referred children and adolescents, aged 4-17 years old, were clinically evaluated. Ages of onset of CD symptoms (N=53) were ascertained and divided according to DSM-IV criteria as childhood onset (<10 years old) or adolescent onset (>or=10 years old). RESULTS: Childhood-onset conduct disorder was associated with higher rates of ADHD and anxiety disorders, male gender, and perceived and total hostility scores than adolescent-onset conduct disorder. Adolescent-onset was associated with higher rates of PTSD, alcohol and substance use disorders, complex comorbidity (i.e., 6+ diagnoses lifetime), and female gender. CONCLUSIONS: Understanding age-of-onset-related patterns of comorbidity may facilitate psychiatric treatment planning in children and adolescents with conduct disorder.     

Use of health services for major depressive and anxiety disorders in Finland

Factors associated with people suffering from major depressive disorder (MDD) or anxiety disorders seeking or receiving treatment are not well known. In the Health 2000 Study, a representative sample (n=6005) of Finland's general adult (> or =30 years) population was interviewed with the M-CIDI for mental disorders and health service use for mental problems during the last 12 months. Predictors for service use among those with DSM-IV MDD (n=298) or anxiety disorders (n=242) were assessed. Of subjects with MDD, anxiety disorders, or both, 34%, 36%, and 59% used health services, respectively. Greater severity and perceived disability, psychiatric comorbidity, and living alone predicted health care use for MDD subjects, and greater perceived disability, psychiatric comorbidity, younger age, and parent's psychiatric problems for anxiety disorder subjects. The use of specialist-level mental health services was predicted by psychiatric comorbidity, but not characteristics of the disorders per se. Perceived disability and comorbidity are factors influencing the use of mental health services by both anxiety disorder and MDD subjects. However, still only approximately one-half of those suffering from even severe and comorbid disorders use health services for them.     

Substance use disorder comorbidity among inpatient youths with psychiatric disorder

OBJECTIVE: Substance abuse/dependence has been reported to show significant association with psychopathology, and is likely to influence the course and outcome of psychiatric illness. The aim of this study was to determine the rate of substance use disorders (other than alcohol) comorbidity among inpatient adolescents with severe Axis 1 psychiatric disorder. METHOD: A retrospective analysis of systematically collected data was carried out. The subjects were 16-18-year-old youths, admitted to an inpatient unit for severe psychiatric disorder. The data collection process utilized the DSM-IV criteria for diagnostic categorization of psychiatric disorder and substance use disorder. Demographic data, and data on suicide attempts were also collected. RESULTS: Over a period of one year (March 2001-March 2002), 62 patients were admitted to the Christchurch Youth Inpatient Unit; 40 (64.5%) had a comorbid Substance Abuse Disorder (SAD) according to DSM-IV criteria and none had a Substance Dependence Disorder. The vast majority involved cannabis and stimulants. Sixty per cent of those with mood disorder, 63% of those with anxiety disorder and 80% of those with schizophrenia spectrum disorder had a comorbid SAD. Internalizing problems, especially mood disorders, pre-dominated among those with SAD reflecting the Unit's admission criteria. There were no differences in attempted suicide rates between those with SAD and those without SAD, but those with SAD were more likely to have unstable accommodation/living arrangements than those without SAD. CONCLUSIONS: Our findings confirm previous reports suggestive of high rates of SAD comorbidity among youth with severe psychiatric illness. There are clinical and process implications for these findings particularly identification of substance use disorders and their treatment as well as resource availability and staff training.     

Psychiatric diagnosis and quality of life: the additional burden of psychiatric comorbidity

Objectives

To compare quality of life (QoL) in mental health outpatients to non-clinical norms, and examine the associations between QoL and principal diagnosis, number of comorbid Axis I diagnoses, and type of comorbidity.

Methods

Consecutively referred and assessed patients (n = 2024) formed the study sample pool. Of these, 1486 individuals who had completed a QoL instrument at intake and had a principal diagnosis amenable to comparison by group analysis were included in the study. Principal diagnoses were unipolar mood disorder (n = 687), eating disorder (n = 226), bipolar disorder (n = 165), social anxiety disorder (n = 165), generalized anxiety disorder (n = 125), and panic disorder (n = 118). QoL for psychiatric groups was compared to non-clinical norms using a valid and reliable measure.

Results

QoL was significantly impaired in all psychiatric groups compared to nonclinical norms. There was a significant interaction between principal diagnosis and number of comorbid Axis I disorders, controlling for age, sex, marital status, employment, and years of school. The addition of one comorbidity significantly attenuated QoL in social anxiety disorder, panic disorder, and bipolar disorder. For all other conditions, a significant loss in QoL occurred with two or more comorbidities. Axis I depressive and anxiety comorbidity significantly attenuated QoL across all diagnostic groups.

Conclusions

QoL is significantly impaired in psychiatric outpatients and diagnostic groups vary in the extent to which they experience additional QoL burden with increasing comorbidities.     

Patterns of comorbidity in relation to functioning (GAF) among general hospital psychiatric referrals. European Consultation-Liaison Workgroup

Improvement of services for physically ill patients with concurrent psychiatric problems is a noteworthy issue in general hospitals. Among 1249 general hospital in-patients referred for psychiatric consultation, concurrent mental and behavioural disorders (ICD-10) were diagnosed in 84% of cases. Any concurrent mental and behavioural disorder was associated with dramatically low functioning (GAF = 46), indicating serious psychosocial impairment. This is a striking new finding of clinical importance. The effect on functioning was similar for substance use disorders, other mental disorders, and combined mental and substance use disorders (dual diagnoses), with no gender differences. This finding highlights the need for specialized interventions among general hospital in-patients referred for psychiatric consultation.     

Recorded psychiatric comorbidity with bipolar disorder – A Finnish hospital discharge register study

Bipolar disorder is frequently connected to other psychiatric disorders. On the basis of The National Hospital Discharge Register in Finland, we studied the recorded prevalence of psychiatric comorbidity among bipolar inpatients by clinicians, and the factors that were associated with it. Of the 2687 hospital stays in 1998, 82% had no other recorded psychiatric diagnosis except an episode of bipolar disorder. Psychiatric comorbidity was recorded in 18% of hospital stays, of which 20% had two comorbid psychiatric diagnoses. Substance-related disorders (11%) were the most commonly recorded comorbid disorders. Personality disorders were recorded in 6%, and anxiety disorder in 1% of the hospital stays. These figures should be considered far below the expected ones. Recorded comorbidity was associated with the type of episode. Comorbidity in bipolar disorder in psychiatric hospitals in Finland seems to go greatly undetected and may have a deteriorating impact on the course of the illness.     

Co-occurring mental and substance use disorders: the neurobiological effects of chronic stress

The high rate of co-occurrence of substance use disorders and other psychiatric disorders is well established. The population of people with co-occurring disorders is heterogeneous, and the prevalence of comorbidity differs by diagnostic group. One of the overarching issues in the area of comorbidity is the nature of the connection between psychiatric disorders and substance use disorders. The rapid development of technical advances in the neurosciences has led to a better understanding of the molecular biology, neurotransmitter systems, and neural circuitry involved in mental illness and substance use disorders. The authors discuss the neurobiological interface between substance use disorders and other psychiatric disorders with an emphasis on emerging data concerning four psychiatric disorders that commonly co-occur with substance use disorders: depression/mood disorders, posttraumatic stress disorder, attention deficit hyperactivity disorder, and schizophrenia. Better understanding of the connection between substance use disorders and psychiatric disorders could have a profound effect on prevention and treatment.     

Clinical, psychosocial, and treatment differences in minority patients with bipolar disorder

OBJECTIVES: The clinical profile of minorities with bipolar disorder has been largely unexplored. We compared the clinical (e.g. psychiatric and substance use comorbidity), psychosocial, and treatment characteristics between white and minority patients with bipolar disorder (minorities were defined as black or other minority, which included Hispanic, Asian-American, or Native-Americans). METHODS: We collected demographic, diagnosis, and treatment information using the Structured Clinical Interview for DSM-IV (SCID) from 330 inpatients with a current major affective episode across 11 Veterans Affairs (VA) Medical Centers enrolled in the VA Cooperative Study (Reducing the Efficacy-Effectiveness Gap in Bipolar Disorder). RESULTS: Twenty-four percent (n=80) were minority; 9% (n=30) were women, 4% (n=20) were >or=65 years old; and the majority (87%, n=286) had bipolar type I. Minorities compared with whites were no more likely to have a current episode of psychosis (30% versus 37%, respectively; p=0.28). However, minorities were more likely than whites to have a cocaine use disorder (adjusted odd's ratio, OR=2.2; 95% CI: 1.4-3.5; p<0.01) or current alcohol abuse disorder (adjusted OR=1.8; 95% CI: 1.1-3.9;p<0.05). Further breakdown by race/ethnicity revealed that cocaine use disorder was most prevalent among blacks (n=14, 29%), compared with all other minorities (n=2, 6%) or whites (n=10, 4%; p<0.001). Other minorities compared with blacks or whites were more likely involuntarily committed during some part of their index hospitalization (adjusted OR=2.47; 95% CI: 1.1-5.7; p=0.04). CONCLUSIONS: Minorities with bipolar disorder may be a more vulnerable population because of higher rates of substance use disorder and higher rates of involuntary psychiatric commitment. Moreover, the specific profile of vulnerability may differ across minority groups.     

Police-registered offenses and psychiatric disorders among young males

OBJECTIVE: To study associations between crime and psychiatric disorders among adolescent males in a representative population-based cohort study. METHOD: The sample includes 2,712 Finnish boys born in 1981. Information on criminality consists of offenses registered in the Finnish National Police Register 1998-2001. Crime was classified according to frequency and type (drug, violent, property, traffic, and drunk driving offenses). Information on psychiatric diagnoses between 1999 and 2004 was collected from the Finnish National Military Register. RESULTS: Of the 2,712 boys, 22% had a crime registration during the 4-year period, and 10% had at least one psychiatric disorder according to the Military Register. Those with psychiatric disorders accounted for 49% of all crimes. Of those with more than five crimes (n = 98), 59% had psychiatric diagnoses. After adjusting for other crime types and childhood socio-economic status, property crime was independently associated with several diagnoses: antisocial personality (APD), substance use (SUD), psychotic, anxiety, and adjustment disorders. Drug offending was independently associated with APD, SUD, and psychotic disorder, and traffic offenses with APD. CONCLUSIONS: Youth crime is predominantly associated with antisocial personality and substance use disorders. Crime prevention efforts should focus on boys showing a risk for antisocial and substance use problems. In particular, property, drug, and repeat offenders need mental health and substance use assessment. There is a need to develop integrated mental health and substance use treatment services for young offenders within or alongside the criminal justice system.     

Comorbid psychiatric disorders in Arab children with Autism spectrum disorders

The objective of our study is to estimate the prevalence of comorbid psychiatric disorders in a sample of children with autism spectrum disorders (ASD) recruited from three Arab countries. We also examine the relationship between comorbidity and children's cognitive functioning and gender. Children who received a diagnosis of ASD (n = 60) from a child psychiatric outpatient clinic in Mansoura (Egypt), Al-Ahsa (Saudi Arabia) and Amman (Jordan) were included in this study. Comorbid diagnoses were established with a clinical interview and a semi-structured clinical interview for children and adolescents (SCICA). In addition, for all patients the cognitive evaluation was measured given the range in age and level of ability. Sixty-three percent of the children were diagnosed with at least one comorbid disorder. The most commonly reported comorbid disorders were anxiety disorders (58.3%), ADHD (31.6%), conduct disorders (23.3%), and major depressive disorder (13.3%). Out of the total sample, Obsessive compulsive disorder was the most prevalent anxiety disorder (55%). Elimination disorders were also diagnosed in 40% of patients. These findings emphasize a wide variety of psychiatric comorbidity afflicting youth with ASD and may be important targets for intervention.     

Psychiatric aspects of lung transplant. The Toronto Lung Transplant Group

Psychiatric problems in a consecutive series of lung transplant applicants (n = 116), candidates (n = 57) and recipients (n = 42) are reported. Fifty percent of all the applicants for lung transplantation reported a history of psychiatric disorder including organic brain syndrome (19%), major depressive episode (16%), panic or anxiety disorder not otherwise specified (11%) and alcohol or substance abuse (11%). In most cases, psychiatric problems had occurred in these patients as a complication of endstage lung disease. The most common new diagnoses in candidates awaiting surgery were adjustment disorder with anxious mood and anxiety disorders. Organic brain syndromes developed in over 50% of the recipients during the first two post-operative weeks. The type and prevalence of these disorders have implications for the management of lung transplant patients and those with chronic pulmonary disease.     

Psychiatric comorbidity in binge-eating disorder as a function of smoking history

OBJECTIVE: To examine the comorbidity of psychiatric disorders in obese women with binge-eating disorder (BED) as a function of smoking history. METHOD: A consecutive series of 103 obese treatment-seeking women with current DSM-IV diagnoses of BED were administered structured diagnostic interviews to assess all DSM-IV Axis I psychiatric disorders. Participants were classified as "never" or "daily" smokers, and lifetime rates of comorbid psychopathology were compared across smoking groups using logistic regression. The study was conducted from February 2003 to March 2005. RESULTS: Smokers were significantly more likely to meet criteria for co-occurring diagnoses of major depressive disorder (p = .03), panic disorder (p = .01), posttraumatic stress disorder (p < .05), and substance abuse or dependence (p = .01). Even after excluding participants with substance use disorders, significant differences remained, with lifetime smokers having significantly higher rates of co-occurring anxiety disorders. CONCLUSIONS: It is possible that for some obese women with BED, binge eating and cigarette smoking share common functions, i.e., both behaviors may serve to modulate negative affect and/or anxiety. Although the current findings are consistent with a view of a common diathesis for the development of impulsive eating, cigarette or other substance use, and additional Axis I psychopathology, prospective longitudinal studies are needed to elucidate the nature of potential pathways.     

The association between gambling pathology and personality disorders

Research supports increased risk of problem gambling (PG) and pathological gambling disorder (PGD) among individuals with substance abuse/dependence and psychiatric disorders, but studies considering personality disorder comorbidity have not adjusted for confounding relationships with other Axis I disorders. Using targeted advertising, we enrolled 153 gamblers (55% female; 32% minority; Mean age=47; SD=18.2) in a clinical validation study of the newly developed computerized gambling assessment module (C-GAM). For these analyses, we classified gamblers into three groups based on their endorsement of DSM-IV PGD: Non-gamblers (0 criteria; n=64; 44%); PG (1-4 criteria; n=60; 41%); and PGD (5-10 criteria; n=22; 15%). We evaluated PG and PGD risk associated with personality disorder pathology using the computerized structured clinical interview of DSM-IV Axis II (SCID-II). Using multinomial logistic regression, we found increased odds of PGD among individuals with greater symptoms of borderline personality disorder after adjusting for socio-demographics, substance abuse/dependence and other personality disorders significant at the bivariate level. Yet after adjusting for depressive symptoms, borderline personality disorder criteria were nonsignificant, suggesting a complex relationship between personality pathology, depression, and gambling. These findings bolster the position that further investigation is needed regarding the association of gambling pathology with personality disorders and depressive symptoms.     

Clinicians' assessments of bipolar disorder and substance abuse as predictors of suicidal behavior in acutely hospitalized psychiatric inpatients.

BACKGROUND: Suicide is a major risk for those with bipolar disorder, a risk amplified by comorbid substance abuse in some, but not all, previous studies. To further explore the relationships of substance abuse, suicide, and bipolarity as they present in clinical practice, we analyzed standardized clinical data from a large acute psychiatric inpatient service. METHODS: Standardized clinical evaluations of 7819 patients with diagnoses of bipolar depression (n=990), bipolar mania (n=948), unipolar depressive episode (n=3626), or schizophrenia-schizoaffective disorders (n=2255) were analyzed to evaluate the relationship between current substance-use problems, substance-induced symptoms, and a current suicide crisis, as well as lifetime suicide attempts, with logistic regressions adjusting for age, gender, and ethnicity. RESULTS: Across the combined groups, current substance-use problems were significantly associated with a lifetime suicide attempt (odds ratios [ORs] 1.6-2.5) and to a lesser degree to the admission suicide crisis (ORs 1-2.2). Among bipolar (depressed/manic) patients, but not other diagnostic groups, those with both current substance-use problems and substance-induced symptoms had even higher rates of a recent suicide crisis (ORs 1.5-3.1) and of a lifetime attempt (ORs 2.5-3.4). CONCLUSIONS: In bipolar patients, substance use disorder doubled and substance use disorder plus substance-induced symptoms tripled the suicidal risk. Implications for future research are discussed.     

Psychiatric Comorbidities among Female Adolescents with Anorexia Nervosa

This study investigated current comorbid Axis I diagnoses associated with Anorexia Nervosa (AN) in adolescents. The sample included 101 female adolescents treated at a psychiatric unit for primary DSM-IV diagnoses of AN. 73.3% of the AN patients were diagnosed as having a current comorbidity of at least one comorbid Axis I diagnosis, with no differences across AN subtypes. Mood disorders (60.4%) were most commonly identified, followed by the category anxiety disorders without obsessive-compulsive disorders (OCD) (25.7%), OCD (16.8%) and substance use disorders (7.9%). Two specific diagnoses differed across the two subtypes of AN. Substance use disorder was 18 times, and the category anxiety disorder without OCD was three times as likely to co-occur with AN binge-eating disorder and purging type than with AN restricting type. Clinicians should be alerted to the particularly high rate of psychiatric comorbidities in adolescents suffering from AN.     

Missed bipolarity and psychiatric comorbidity in women with postpartum depression

Objective:  To investigate the diagnostic profile of women referred for postpartum depression.
Methods:  Fifty-six women seen consecutively with the referral diagnosis of postpartum depression were administered structured instruments to gather information about their DSM-IV Axis I diagnoses.
Results:  In terms of frequency of occurrence, the primary diagnoses in this sample were: major depressive disorder (46%), bipolar disorder not otherwise specified (29%), bipolar II disorder (23%), and bipolar I disorder (2%). A current comorbid disorder, with no lifetime comorbidity, occurred among 32% of the sample; by contrast, lifetime comorbidity alone (i.e., with no currently comorbid disorder) was found among 27%. Both a lifetime and a current comorbidity were found among 18% of the women, and 23% had no comorbid disorder. The most frequently occurring current comorbid disorder was an anxiety disorder (46%), with obsessive-compulsive disorder (62%) being the most common type of anxiety disorder. For lifetime comorbidity, substance use (20%) and anxiety disorders (12%) were the two most common. Over 80% of patients who scored positive on either the Highs Scale or the Mood Disorder Questionnaire met the diagnostic criteria for a bipolar disorder.
Conclusion:  The results suggest that postpartum depression is a heterogeneous entity and that misdiagnosis of bipolar disorder in the postpartum period may be quite common. The findings have important clinical implications, which include the need for early detection of bipolarity through the use of reliable and valid assessment instruments, and implementation of appropriate prevention and treatment strategies.     

Gambling disorders among homeless persons with substance use disorders seeking treatment at a community center

OBJECTIVES: Epidemiological research suggests that homelessness is a risk factor for elevated levels of psychiatric comorbidity and other health risks. This study examined the prevalence of disordered gambling and its association with treatment of psychiatric and substance use disorders among a cohort of homeless people seeking treatment at a community services program. METHODS: Between 1998 and 2000, intake workers evaluated the level of gambling disorder among 171 consecutive homeless persons with substance use disorders who sought treatment at the Moving Ahead Program in Boston. Program staff administered the DSM-IV subscale of the Massachusetts Gambling Screen at intake. RESULTS: The prevalence rates of level 2 and level 3 gambling disorders were 12.8 percent and 5.5 percent, respectively. These rates are higher than that of the general adult population but comparable to those of other patients with substance use disorders and psychiatric diagnoses. Program participants with level 3 gambling disorders had been homeless more often and at a younger age and had had less substance abuse treatment and more psychiatric treatment than participants with level 1 or level 2 gambling disorders. Participants with level 2 gambling disorders had been homeless more often and for a longer duration than participants without gambling disorders. CONCLUSIONS: These findings should encourage clinicians working with homeless people to screen for gambling-related problems and disorders.     

Systematic Literature Review of Psychiatric Comorbidities in Adults with Epilepsy

Background and PurposeMental illness is disproportionately common in people with epilepsy (PWE). This systematic literature review identified original research articles that reported the prevalence of psychiatric comorbidities based upon clinical assessments in a sample of PWE and assessed the clinical features of the populations found in studies included in our review of mental health comorbidity.MethodsThe included articles were written in English and published from 2008 to 2018, and focused on adults aged ≥18 years who had psychiatric diagnoses determined in clinical assessments, such as those found in medical records, clinician psychiatric evaluations, structured diagnostic interviews, and mental health screening questionnaires specific for a psychiatric disorder. The primary outcome was the prevalence of psychiatric comorbidities as a percentage of the total sample of PWE. Additional data included the overall sample size, mean age, epilepsy type, study design, and method of diagnosis. A modified Newcastle Ottawa Scale was used to assess the quality of the studies. All 23 articles that were consistent with the inclusion criteria were related to observational studies.ResultsMood disorders and anxiety disorders were the most common psychiatric comorbidities, with prevalence rates of 35.0% and 25.6%, respectively. Major depressive disorder was the most common mood disorder, with a prevalence of 24.2%. Post-traumatic stress disorder (PTSD) had the highest reported prevalence among anxiety disorders, at 14.2%, followed by general anxiety disorder at 11.1%. Other comorbidities included psychosis (5.7%), obsessivecompulsive disorder (3.8%), schizophrenia (1.7%), bipolar disorder (6.2%), and substance abuse (7.9%). The pooled prevalence of suicidality, as reported for two studies, was 9.3%. Temporal lobe epilepsy (TLE) was associated with higher levels of psychiatric comorbidity. Two (8.7%) of the 23 studies compared psychiatric comorbidities in TLE with that of extratemporal lobe epilepsy (ETLE), and one of these two studies found that depression was more common in TLE (53.8%) than in ETLE (25%). Regarding seizure types, partial seizures were associated with a higher prevalence of depression vs generalized seizures.ConclusionsThis systematic literature review of recent original research found a relatively high prevalence of mental health comorbidities in PWE. Mood and anxiety disorders are the most common comorbidities, while psychotic spectrum conditions such as schizophrenia and bipolar disorder are much rarer. The prevalence of comorbidity may vary with the epilepsy type and treatment responsiveness. These findings suggest that screening tools for depression and anxiety should be included as part of the training for epilepsy care, while resources for other relatively common conditions such as PTSD and substance abuse disorders should be readily available to neurology specialists who treat PWE.