Does age at onset have clinical significance in older adults with bipolar disorder?

Factors associated with onset-age in major affective disorders

BACKGROUND

Research findings on factors associated with onset-age (OA) with bipolar (BD) and major depressive disorders (MDD) have been inconsistent, but often indicate greater morbidity following early OA.

METHODS

We considered factors associated with OA in 1033 carefully evaluated, systematically followed mood disorder subjects with DSM-5 BD (n = 505) or MDD (n = 528), comparing rates of descriptive and clinical characteristics following early (age <18), intermediate (18-40), or later onset (≥40 years), as well as regressing selected measures versus OA. Exposure time (years ill) was matched among these subgroups.

RESULTS

As hypothesized, many features were associated with early OA: familial psychiatric illness, including BD, greater maternal age, early sexual abuse, nondepressive first episodes, co-occurring ADHD, suicide attempts and violent suicidal behavior, abuse of alcohol or drugs, smoking, and unemployment. Other features increased consistently with later OA: %-time-depressed (in BD and MDD, women and men), as well as depressions/year and intake ratings of depression, educational levels, co-occurring medical disorders, rates of marriage and number of children.

CONCLUSIONS

OA averaged 7.5 years earlier in BD versus MDD (30.7 vs. 38.2). Some OA-associated measures may reflect maturation. Associations with family history and suicidal risk with earlier OA were expected; increases of time-depressed in both BD and MDD with later OA were not. We conclude that associations of OA with later morbidity are complex and not unidirectional but may be clinically useful.

Clinical correlates of late-onset versus early-onset bipolar disorder in a global sample of older adults

OBJECTIVES

Late-onset bipolar disorder (LOBD) represents a significant subgroup of bipolar disorder (BD). However, knowledge for this group is mostly extrapolated from small studies in subjects with early/mixed age of illness onset. In this global sample of older adults with BD (OABD: ≥50 years old) we aim to characterize the sociodemographic and clinical presentation of LOBD (≥40 years at BD onset) compared to early-onset BD (EOBD: <40 years at BD onset).

METHODS

The Global Aging and Geriatric Experiments in Bipolar Disorder consortium provided international data on 437 older age bipolar disorder participants. We compared LOBD versus EOBD on depression, mania, functionality, and physical comorbidities. Exploratory analyses were performed on participants with BD onset ≥50 years old.

RESULTS

LOBD (n = 105) did not differ from EOBD (n = 332) on depression, mania, global functioning, nor employment status (p > 0.05). Late-onset bipolar disorder was associated with higher endocrine comorbidities (odds ratio = 1.48, [95%CI = 1.0,12.1], p = 0.03). This difference did not remain significant when subjects with BD onset ≥50 years old were analyzed.

LIMITATIONS

This study is limited by the retrospective nature of the variable age of onset and the differences in evaluation methods across studies (partially overcame by harmonization processes).

CONCLUSION

The present analysis is in favor of the hypothesis that LOBD might represent a similar clinical phenotype as classic EOBD with respect to core BD symptomatology, functionality, and comorbid physical conditions. Large-scale global collaboration to improve our understanding of BD across the lifespan is needed.

Elderly Bipolar Disorder

PURPOSE OF REVIEW

With more individuals reaching older ages, bipolar disorder is no longer a rare illness in the elderly. Despite the growing number of the older individuals with the illness, there are few studies that focus on bipolar disorder in the geriatric population leading to gaps in clinical knowledge and treatment. The aim of this study is therefore to increase understanding by summarizing the available literature on the epidemiology, symptomatology, comorbidities, and treatment recommendations in this cohort, as well as to suggest areas for future clinical and research focus.

RECENT FINDINGS

The prevalence of bipolar disorder is underestimated in the geriatric population. The illness maintains the main features observed in the other cohorts but it also has some specific characteristics in the older individuals. In this cohort, psychiatric and medical comorbidities tend to be the rule rather than the exception. Higher rates of cognitive impairments than age- and education-matched groups present across all of the illness phases. Treatment is more challenging in the elderly individuals due to higher rates of comorbidities and susceptibility to medication side effects. Two cohorts of older individuals with bipolar disorder can be recognized, those with symptoms that start earlier in life and those with late-life onset. Although the knowledge about elderly bipolar disorder is only slowly growing, it is increasingly recognized as an illness with unique features. More work is needed to improve diagnosis and to establish treatment guidelines.

Older men with bipolar disorder diagnosed in early and later life: Physical health morbidity and general hospital service use

BACKGROUND

Bipolar disorder (BD) has been associated with greater health morbidity burden, but it is unclear if this association is affected by age at the time of diagnosis and how this might impact on the use of general hospital services.

METHODS

Cross-sectional study investigating the prevalence of common medical morbidities among participants with early (EOBD) and late onset diagnosis of BD (LOBD - age at diagnosis ≥ 60 years) derived from a community-representative sample of 37,183 men aged 65-85 years. Cohort study over a follow up period of up to 17.7 years investigating the hazard of general hospital use among older men associated with EOBD and LOBD taking into account age and prevalent medical morbidities.

RESULTS

250 older men had a recorded diagnosis of BD, 75 of whom had LOBD. Diabetes, stroke and diseases of the respiratory and digestive systems were more frequent in men with than without BD. There were no differences in the distribution of medical morbidities between men with EOBD and LOBD. The adjusted hazard ratio (HR) of contact with general hospital services was significantly higher among men with EOBD (HR = 1.33; 95%CI = 1.14, 1.54) and LOBD (HR = 1.27, 95%CI = 1.06, 1.51) compared with older men without BD. Older men with EOBD had the highest number of contacts with general hospital services during follow up, although men with EOBD and LOBD did not differ in the number of contacts due to episodes of mania or depression. The medical reasons for contact with general hospital services of men with EOBD and LOBD overlapped but were not identical.

CONCLUSIONS

Older men with BD experience greater health morbidity than men without BD. Older men with BD access hospital services for the management of physical morbidities earlier and more frequently than men without BD. Age at the time of diagnosis of BD has limited impact on the risk of contact with general medical services, although subtle differences in the physical morbidity of men with EOBD and LOBD warrant further investigation.

Possible predictors of age at illness onset and illness duration in a cohort study comparing younger adults and older major affective patients

BACKGROUND

Major affective conditions are associated with significant disability and psychosocial impairment. Whether specific socio-demographic and clinical characteristics may distinguish subgroups of patients in terms of prognosis and illness trajectories is a matter of debate.

METHODS

The sample of this naturalistic cohort study included 675 currently euthymic patients with major affective disorders of which 428 (63.4%) were diagnosed with unipolar and 247 (36.6%) with bipolar disorders.

RESULTS

Younger adults with a longer duration of untreated illness and residual inter-episodic symptoms were more likely to be single or divorced, students, with an earlier age of first treatment/hospitalization, longer duration of substance abuse and duration of illness than older patients who were, conversely, more likely to be widowed and retired. Multivariate analyses showed a significant positive contribution to age at illness onset by marital status, nonpsychiatric medications, substance abuse, psychiatric diagnosis (bipolar vs. unipolar), age at first treatment/hospitalization, duration of illness, and current age. According to a further analysis, we also found a significant positive contribution to duration of illness by marital status, educational level, positive history of psychiatric conditions in family, substance abuse, psychiatric diagnosis (bipolar vs. unipolar), age at illness onset, age at first treatment, and certain cardiovascular disorders.

CONCLUSIONS

There are substantial socio-demographic and clinical differences that may help to distinguish specific subgroups of patients; however, additional studies are requested to replicate these results and further investigate the main factors underlying our findings.

Depressive symptoms in early- and late-onset older bipolar patients compared with younger ones

OBJECTIVES

The aim of this study was to determine clinical and outcome differences between older bipolar patients with early onset (EO) and late onset (LO) of the illness and between younger and EO older patients with a bipolar disorder under long-term treatment in an outpatient clinical setting.

METHODS

Three hundred ninety-five bipolar I and II outpatients were followed up for up to 7.7 years. Of these, 213 younger (<50 years) and 88 older (>60 years) patients were included. In the older subsample, 50 EO patients (onset <50 years) versus 38 LO patients (≥50 years) were analyzed. Likewise, younger versus EO older patients were compared.

RESULTS

The likelihood of LO older patients of being bipolar II was higher than for EO older patients. They were also diagnosed earlier than EO older patients. No other clinical differences at baseline and at the prospective follow-up were found. Compared with younger patients, EO older patients had more frequent depressive symptoms at baseline, suffered more major depressive episodes in the previous year and in the prospective follow-up, received more antidepressants at baseline, had higher rates of medical comorbid conditions and were less likely to be tobacco smokers.

CONCLUSIONS

Older patients constitute a meaningful proportion of bipolar patients under treatment. EO older patients suffered significantly from more frequent depressive symptoms than younger ones. LO older patients were predominantly bipolar II. So as bipolar illness progressed, depressive symptomatology became more frequent and manic episodes were less severe. Copyright © 2016 John Wiley & Sons, Ltd.

Late onset mania as an organic syndrome: A review of case reports in the literature

AIMS

Although First Episode Mania presenting over the age of 50 is reported in several cases, there has been little systematic compilation of these case reports. We report a review of case reports on these subjects.

METHODS

We undertook a literature search on MEDLINE, PsychInfo and EMBASE to identify case reports of first episode of mania or hypomania presenting over the age of 50.

RESULTS

35 cases were identified. 29/35 (82%) had a suspected underlying organic cause. Organic causes included vascular causes, iatrogenic drug use, electrolyte imbalance, dementia and thyroid disease. Vascular risk factors were present in 17/35 cases (48%). In 10/35 (28%) of cases organic treatment contributed to successful remission of the manic episode.

LIMITATIONS

As evidently not all cases have been reported the main limitation is that of publication bias for this paper. Any such hypothesis generated from studying these cases would require replication in prospective longitudinal trials of this cohort of patients.

CONCLUSIONS

This review of case reports appears to add to evidence of late onset mania having an organic basis. Whether this is a separate organic syndrome remains to be established. Our provisional findings suggest that such patients should have a thorough medical and psychiatric screening in identifying an underlying cause.

Two years' outcome of acute mania in bipolar disorder: different effects of age and age of onset

BACKGROUND

Information about differences between younger and older patients with bipolar disorder and between older patients with early and late age of onset of illness during long-term treatment is scarce.

OBJECTIVES

This study aimed to investigate the differences in treatment and treatment outcome between older and younger manic bipolar patients and between early-onset bipolar (EOB) and late-onset bipolar (LOB) older patients.

METHOD

The European Mania in Bipolar Longitudinal Evaluation of Medication study was a 2-year prospective, observational study in 3459 bipolar patients on the treatment and outcome of patients with an acute manic or mixed episode. Patients were assessed at 6, 12, 18, and 24 months post-baseline. We calculated the number of patients with a remission, recovery, relapse, and recurrence and the mean time to achieve this.

RESULTS

Older patients did not differ from younger bipolar patients in achieving remission and recovery or suffering a relapse and in the time to achieve this. However, more older patients recurred and in shorter time. Older patients used less atypical antipsychotics and more antidepressants and other concomitant psychiatric medication. Older EOB and LOB patients did not differ in treatment, but more older LOB patients tended to recover than older EOB patients.

CONCLUSION

Older bipolar manic patients did not differ from younger bipolar patients in short-term treatment outcome (remission and recovery), but in the long term, this may be more difficult to maintain. Distinguishing age groups in bipolar study populations may be useful when considering treatment and treatment outcome and warrants further study.

Bipolar disorder in the elderly: a cohort study comparing older and younger patients

OBJECTIVE

The purpose of this study was to analyze differences in clinical and socio-demographic characteristics between older and younger bipolar outpatients paying special attention to depressive symptoms in a large, naturalistic cohort.

METHOD

Five hundred and ninety-three DSM-IV-TR bipolar outpatients were enrolled. Clinical characteristics were assessed according to DSM-IV-TR (SCID-I). Subjects were categorized into two groups according to current age (older OBD: age > 65 years; younger-YBD: age < 65 years).

RESULTS

About 80% of patients were younger (N = 470), and a fifth were older (N = 123), with a mean age of 77.30 years in OBD. Older patients were more likely to be married, not qualified, bipolar II, with depressive polarity of first episode, higher age at illness onset, higher age at first hospitalization. They were more likely to present with depressive predominant polarity, with lifetime history of catatonic, psychotic and melancholic features, age at illness onset >40 years, as well as suffering from more medical comorbidities when compared to younger bipolars.

CONCLUSION

The clinical presentation of bipolar disorder in late life would be defined more frequently by melancholic depressive features and a predominantly depressive polarity. These results suggest that treatment strategies for elderly bipolar patients should focus in the prevention of depressive episodes.

Unmet needs and research challenges for late-life mood disorders

Mood disorders are common and often under-recognised in older people whereby, together with the general ageing of the population, they are becoming a significant and growing public health problem worldwide. However, the need to address the problem of late life mood disorders in a real-world setting is met with a surprising lack of strong evidence in this field. Randomised clinical trials which focus on elderly mood disorders are not very common and the majority of them focus on pharmacological treatment of major depression. The aim of this study was to review first the main unmet needs and research challenges in late-life mood disorders as a basis to then review the state of the art evidence resulting from randomised clinical trials and the main critical aspects of their implementation. Comorbidity as well as polypharmacy, cognitive decline, unpredictable placebo response, and uncertainty on optimal duration of trials are some of the challenges the investigator has to address. Moreover, some methodological limitations of randomised clinical trials reduce the applicability of the results of such studies to common clinical practices and have encouraged some authors to investigate the existence of possible alternative research designs such as pragmatic randomised clinical trials.

[Age at Onset as a Marker of Subtypes of Manic-Depressive Illness]

INTRODUCTION

Age at onset of bipolar disorder has been reported as a variable that may be associated with different clinical subtypes.

OBJECTIVE

To identify patterns in the distributions of age at onset of bipolar disease and to determine whether age at onset is associated with specific clinical characteristics.

METHODS

Admixture analysis was applied to identify bipolar disorder subtypes according to age at onset. The EMUN scale was used to evaluate clinical characteristics and principal components were estimated to evaluate the relationship between subtypes according to age at onset and symptoms in the acute in the acute phase, using multivariable analyses.

RESULTS

According to age at onset, three distributions have been found: early onset: 17.7 years (S.D. 2.4); intermediate-onset: 23.9 years (S.D. 5.6); late onset: 42.8 years (S.D. 12.1). The late-onset group is antisocial, with depressive symptoms, thinking and language disorders, and socially disruptive behaviors.

CONCLUSIONS

In patients having bipolar disorder, age at onset is antisocial with three groups having specific clinical characteristics.