International multi-site survey on the use of online support groups in bipolar disorder.

BACKGROUND: Peer support is an established component of recovery from bipolar disorder, and online support groups may offer opportunities to expand the use of peer support at the patient's convenience. Prior research in bipolar disorder has reported value from online support groups. AIMS: To understand the use of online support groups by patients with bipolar disorder as part of a larger project about information seeking. METHODS: The results are based on a one-time, paper-based anonymous survey about information seeking by patients with bipolar disorder, which was translated into 12 languages. The survey was completed between March 2014 and January 2016 and included questions on the use of online support groups. All patients were diagnosed by a psychiatrist. Analysis included descriptive statistics and general estimating equations to account for correlated data. RESULTS AND CONCLUSIONS: The survey was completed by 1222 patients in 17 countries. The patients used the Internet at a percentage similar to the general public. Of the Internet users who looked online for information about bipolar disorder, only 21.0% read or participated in support groups, chats, or forums for bipolar disorder (12.8% of the total sample). Given the benefits reported in prior research, clarification of the role of online support groups in bipolar disorder is needed. With only a minority of patients using online support groups, there are analytical challenges for future studies.

Does the loot box open the door to addiction? A case report of gaming disorder with high charges for loot box purchases.

Background: A loot box is a gaming term for an electronic lottery that randomly provides items that enhance the gaming experience. In recent years, loot boxes have been increasingly discussed as a risk factor of gaming disorder (GD). While they may be purchased for a few dollars at a time, the cumulative expenses resulting from their addictive use have become a social problem. Case Presentation: This paper presents a case of GD involving a substantial financial burden incurred through the use of a Japanese loot box called Gacha. Conclusion: The randomness in the selection of virtual items in loot boxes resembles gambling, triggering the reward system and contributing to an addiction to purchasing more loot boxes. For therapeutic purposes, understanding the motivations behind purchasing loot boxes and considering individual developmental characteristics are crucial to helping patients find satisfaction and a sense of achievement in activities besides gaming.

[Delusions].

We have reviewed differential diagnostics and treatment of mental disorders with delusions in elderly people. Their delusions are often influenced by sensory disturbances, general medical conditions, and psychological as well as living status. Because delusions are not specific to particular disorders, differential diagnostics require assessment of other symptoms. In making a treatment plan, it is essential to consider psychosocial factors that contribute to development of delusions. The goal should be to help the patient live an ordinary life even if their delusions persist.

Post-hospitalization course and predictive signs of suicidal behavior of suicidal patients admitted to a psychiatric hospital: a 2-year prospective follow-up study.

BACKGROUND: Suicidal patients admitted to a psychiatric hospital are considered to be at risk of suicidal behavior (SB) and suicide. The present study aimed to seek predictors of SB recurrence of the high-risk patients by examining their post-hospitalization course. METHOD: The design was 2-year prospective follow-up study of patients consecutively admitted with SB to a psychiatric center in Tokyo. The DSM-IV diagnoses and SB-related features of subjects were determined in structured interviews. Subsequently, the subjects underwent a series of follow-up assessments at 6-month intervals. The assessment included inquiries into SB recurrence, its accompanying suicidal intent (SI) and SF-8 health survey. Analyses of serial change over time in the follow-up data and Cox proportional hazards regression analyses of SB recurrence were performed. RESULTS: 106 patients participated in this study. The dropout rate during the follow-up was 9%. Within 2 years, incidences of SB as a whole, SB with certain SI (suicide attempt) and suicide were 67% (95% CI 58 - 75%), 38% (95% CI 29 - 47%) and 6% (95% CI 3 - 12%), respectively. Younger age, number of lifetime SBs and maltreatment in the developmental period were predictive of SB as a whole, and younger age and hopelessness prior to index admission were predictive of suicide attempt. Regarding diagnostic variables, anxiety disorders and personality disorders appeared to have predictive value for SB. Additionally, poor physical health assessed during the follow-up was indicated as a possible short-term predictor of SB recurrence. CONCLUSIONS: This study demonstrated a high incidence of SB and suicide and possible predictors of SB recurrence in the post-hospitalization period of psychiatric suicidal patients. Specialized interventions should be developed to reduce the suicide risk of this patient population.

Obsessive-Compulsive Disorder with Psychotic Features: Is It a Clinical Entity?

(1) Background: Even though the comorbidity of obsessive-compulsive disorder (OCD) and a psychotic disorder (PD), such as schizophrenia, is being increasingly recognized, the impact of this comorbidity on the clinical presentation, including insight into obsessive-compulsive symptoms and the functioning of OCD, remains unclear. (2) Methods: To investigate clinical differences between OCD patients with and without PD, 86 Japanese outpatients who met the DSM-IV-TR criteria for OCD were recruited and divided into two groups: 28 OCD patients with PD, and 58 OCD patients without PD. The two groups were cross-sectionally compared in terms of their sociodemographic profiles and clinical characteristics, including the DSM-IV-TR insight specifier and the Global Assessment of Functioning (GAF). (3) Results: The results showed that OCD patients with PD scored lower on both the insight and GAF assessments. (4) Conclusions: The present study suggests that comorbid PD in OCD is a clinical entity.

[Diagnosis and treatment of "acute psychosis" from the dimensional perspective].

The term "acute psychosis" is commonly used as a provisional diagnosis in psychiatric acute settings, especially in emergency, when there is not sufficient information available to give a specific categorical diagnosis. The provisional diagnosis "acute psychosis" involves psychotic conditions with acute onset, psychotic conditions with unknown course and acute behavioural disorders with unknown subjective experiences. Because this provisional diagnosis is not a proper category, dimensional assessment of psychopathology including delusions, hallucinations, disorganization, mood/affect, catatonia and disorder of consciousness is required to start specific treatment. As "acute psychosis" is nosologically ill defined in the dichotomy of schizophrenia and mood disorder, traditional types such as bouffée délirante, cycloid psychoses and reactive psychosis are useful in practice as frames of reference. Because the provisional diagnosis of "acute psychosis" involves non-psychotic disorders such as adjustment disorders and personality disorders, the perspective of genetic understanding is helpful in making a non-dimensional differential diagnosis.

Delusion progression process from the perspective of patients with psychoses: A descriptive study based on the primary delusion concept of Karl Jaspers.

BACKGROUND: Delusion occupies an important position in the diagnosis and treatment of patients with psychoses. Although Karl Jaspers' concept of the primary delusion (PD) is a key hypothesis in descriptive phenomenology concerning the primordial experience of delusion, to our knowledge it has not been verified in empirical studies of patients with psychosis, and the relationship between PDs and fully developed delusions remains unclear. METHODS: The subjects were 108 psychiatric patients diagnosed with DSM-IV schizophrenia or schizoaffective disorder who had persisting delusions. This investigation used a newly devised semi-structured interview, the Delusion and its Origin Assessment Interview (DOAI), and the Positive and Negative Syndrome Scale. PDs enquired about in the DOAI were delusional perception, delusional memory, delusional mood, and delusional intuition. Associations of PDs with delusion themes and delusion features extracted from DOAI items by factor analysis were examined using correlational and MANCOVA regression analyses. Reliability studies of the DOAI were also conducted. RESULTS: The reliability and correlation analyses suggested robust psychometric properties of the DOAI. The percentages of subjects reporting PD phenomena as delusion origins and currently present were 93% and 84%, respectively. MANCOVA revealed several significant associations, including between delusional perception and delusional mood and persecutory themes, between delusional intuition and grandiose delusions, and between delusional perception and intuition and systematization of delusions. DISCUSSION: This study demonstrates that PDs can be considered as principal origins of delusions by subjects with psychosis, and have meaningful connections with the characteristics of their fully developed delusions. The associations between PDs and delusion characteristics can be interpreted in terms of progression processes of delusions, which are seen as intensification and generalization of cognitive and affective pathologies in PDs. The findings are also consistent with the neurobiological hypothesis that aberrant salience attribution to stimuli, as in PDs, is the primary phenomenon caused by abnormal dopamine system regulation. Further studies are needed to clarify delusion progression processes relating to PDs and to substantiate their clinical meanings.

Psychiatric disorders and clinical correlates of suicidal patients admitted to a psychiatric hospital in Tokyo.

BACKGROUND: Patients admitted to a psychiatric hospital with suicidal behavior (SB) are considered to be especially at high risk of suicide. However, the number of studies that have addressed this patient population remains insufficient compared to that of studies on suicidal patients in emergency or medical settings. The purpose of this study is to seek features of a sample of newly admitted suicidal psychiatric patients in a metropolitan area of Japan. METHOD: 155 suicidal patients consecutively admitted to a large psychiatric center during a 20-month period, admission styles of whom were mostly involuntary, were assessed using Structured Clinical Interviews for DSM-IV Axis I and II Disorders (SCID-I CV and SCID-II) and SB-related psychiatric measures. Associations of the psychiatric diagnoses and SB-related characteristics with gender and age were examined. RESULTS: The common DSM-IV axis I diagnoses were affective disorders 62%, anxiety disorders 56% and substance-related disorders 38%. 56% of the subjects were diagnosed as having borderline PD, and 87% of them, at least one type of personality disorder (PD). SB methods used prior to admission were self-cutting 41%, overdosing 32%, self-strangulation 15%, jumping from a height 12% and attempting traffic death 10%, the first two of which were frequent among young females. The median (range) of the total number of SBs in the lifetime history was 7 (1-141). Severity of depressive symptomatology, suicidal intent and other symptoms, proportions of the subjects who reported SB-preceding life events and life problems, and childhood and adolescent abuse were comparable to those of the previous studies conducted in medical or emergency service settings. Gender and age-relevant life-problems and life events were identified. CONCLUSIONS: Features of the studied sample were the high prevalence of affective disorders, anxiety disorders and borderline PD, a variety of SB methods used prior to admission and frequent SB repetition in the lifetime history. Gender and age appeared to have an influence on SB method selection and SB-preceding processes. The findings have important implications for assessment and treatment of psychiatric suicidal patients.

[Actual condition of involuntary admission by order of the prefectural governor: focus on the effects of the Medical Treatment and Supervision Act].

A survey was conducted involving 664 individuals admitted to a public psychiatric hospital in Tokyo Prefecture between July 15, 2004 and July 14, 2007 as a result of involuntary admission by order of the prefectural governor (hereafter, involuntarily admitted patients). The characteristics of patients with a focus on the effects of the Medical Treatment and Supervision Act were investigated in 656 patients, excluding eight patients for whom information at the time of involuntary admission was unclear. The proportion of patients in the present survey who had been reported by prosecutors was markedly low compared to nationwide and previous surveys. This was thought to be a result of the fact that the proportion of patients reported by the police, which tend to include emergency cases, was high due to the characteristics of the present hospital as well as the regional characteristics of Tokyo Prefecture. The characteristics of involuntarily admitted patients tended to be similar to those observed in previous surveys on involuntarily admitted patients at the present and other hospitals in Tokyo Prefecture. Comparison of the characteristics of involuntarily admitted patients and problem behaviors that instigated admission before and after implementation of the Medical Treatment and Supervision Act showed no clear differences, indicating that the act had no marked effect on involuntary admission by order of the prefectural governor. In addition, only a small proportion of patients with problem behaviors corresponding to actions described in the Medical Treatment and Supervision Act were reported by prosecutors, suggesting that such patients were mostly reported by the police. In cases where patients faced involuntary admission by order of the prefectural governor after being reported by the police, the prosecutor may have either been unaware of the patient or, if aware, had not filed a petition. Issues may include clues for investigation in addition to the roles of judicial police officers and prosecutors in investigation procedures in the former case, and the discretion of prosecutors in the latter case. While opinions on the appropriateness of actively applying the Medical Treatment and Supervision Act to these patients vary depending on the interpretation of the act's legal characteristics, it appeared that involuntary admission by order of the prefectural governor was at present not clearly distinguished from the Medical Treatment and Supervision Act. Involuntary admission by order of the prefectural governor and the Medical Treatment and Supervision Act are systems that have significant implications for patients with mental disorders, who are likely to cause injury to themselves or others. In order to facilitate the provision of appropriate medical care, it is important to clarify the systematic relationships within the legal system.

[Psychiatric and personality disorders and clinical characteristics of admitted suicidal patients: data from Matsuzawa Suicidal Behavior Study].

Psychiatric patients who have shown suicidal behavior (SB) are belived to be at a particularly high risk of suicide. However, the number of studies that have sought ways to prevent suicide in this patient population is limited. The present study investigated the diagnosis and SB-related characteristics of psychiatric inpatients showing suicidal behavior prior to admission. One-hundred and fifty-seven eligible subjects were recruited from patients consecutively admitted to a large psychiatric facility during a 20-month period in 2006 and 2007, and underwent extensive research interviews. Percentages of diagnoses based on the Structured Clinical Interview for DSM-IV, Clinician Version (SCID-I, CV) in this series were: affective disorders, 62%; anxiety disorders, 55%; substance use disorders, 38%; psychotic disorders, 27%; and eating disorders, 10%. Eighty-seven percent of the subjects were diagnosed as having some type of personality disorder (PD) in the SCID-II interview. Borderline PD was diagnosed in 56% of the subjects, making it the most frequent type of PD in this series. Frequent SB in these subjects involved: self-cutting, 40%; overdosing, 32%; self-strangulation, 14%; and jumping, 11%. Step-wise logistic regression analyses were conducted to examine the association of dichotomized SB-related clinical characteristics with diagnostic categories (affective disorders, psychotic disorders, substance use disorders, anxiety disorders, and cluster A, B and C PDs). The analysis demonstrated that three diagnostic categories were dominant in the association with clinical characteristics. Cluster B PD was associated with a history of overdosing, greater aggressiveness, interpersonal and life-situational life events, and childhood maltreatment (physical abuse and neglect). Anxiety disorders were related to histories of overdosing, dissociative symptoms in SB, excessive worry concerning life problems, and childhood neglect. Affective disorders were mainly associated with the characteristics of SB or SB-related symptoms: severe depressive symptoms and hopelessness, potentially fatal SB before admission such as self-strangulation, and dissociative symptoms in SB, though they did not show a significant relationship with pre-SB characteristics such as life events or childhood maltreatment. These findings will be helpful to develop treatment guidelines, SB-prevention strategies, and future research regarding suicidal psychiatric patients.

Association between solar insolation and a history of suicide attempts in bipolar I disorder.

In many international studies, rates of completed suicide and suicide attempts have a seasonal pattern that peaks in spring or summer. This exploratory study investigated the association between solar insolation and a history of suicide attempt in patients with bipolar I disorder. Solar insolation is the amount of electromagnetic energy from the Sun striking a surface area on Earth. Data were collected previously from 5536 patients with bipolar I disorder at 50 collection sites in 32 countries at a wide range of latitudes in both hemispheres. Suicide related data were available for 3365 patients from 310 onset locations in 51 countries. 1047 (31.1%) had a history of suicide attempt. There was a significant inverse association between a history of suicide attempt and the ratio of mean winter solar insolation/mean summer solar insolation. This ratio is smallest near the poles where the winter insolation is very small compared to the summer insolation. This ratio is largest near the equator where there is relatively little variation in the insolation over the year. Other variables in the model that were positively associated with suicide attempt were being female, a history of alcohol or substance abuse, and being in a younger birth cohort. Living in a country with a state-sponsored religion decreased the association. (All estimated coefficients p < 0.01). In summary, living in locations with large changes in solar insolation between winter and summer may be associated with increased suicide attempts in patients with bipolar disorder. Further investigation of the impacts of solar insolation on the course of bipolar disorder is needed.

A randomized controlled trial of comprehensive early intervention care in patients with first-episode psychosis in Japan: 1.5-year outcomes from the J-CAP study.

The first episode of psychosis represents a critical period wherein comprehensive early intervention in psychosis (EIP) may alter the course of illness. However, evidence from randomized controlled trials that have examined the impact of comprehensive EIP care on clinical and functional recovery assessed by independent blinded raters is limited. The objective of this study was to conduct a single-blinded multicenter trial comparing comprehensive EIP care and standard care in young patients with first-episode psychosis (FEP) in Japan (J-CAP Study). A total of 77 participants with FEP (aged 15-35 years) were randomized to receive standard care or specialized comprehensive EIP care and were followed up for 1.5 years (trial no.: UMIN000005092). Function (measured with the Global Assessment of Functioning) and clinical remission (defined by internationally standardized criteria proposed by the Remission in Schizophrenia Working Group) were evaluated by independent raters who were blinded to group assignment. Dropout rate and other secondary outcomes were also examined. The specialized EIP care group had a higher clinical remission rate (odds ratio, 6.3; 95% confidence interval, 1.0-37.9) and lower treatment dropout rate (odds ratio, 0.038; 95% confidence interval, 0.002-0.923) than the standard care group, even after adjusting for baseline characteristics. Functional improvement in the specialized EIP care group was slightly higher than that in the standard care group, but this difference was not statistically significant (p = 0.195). From the results, we conclude that comprehensive EIP care may provide advantages over standard care in patients with FEP.

Internet use by older adults with bipolar disorder: international survey results.

BACKGROUND: The world population is aging and the number of older adults with bipolar disorder is increasing. Digital technologies are viewed as a framework to improve care of older adults with bipolar disorder. This analysis quantifies Internet use by older adults with bipolar disorder as part of a larger survey project about information seeking. METHODS: A paper-based survey about information seeking by patients with bipolar disorder was developed and translated into 12 languages. The survey was anonymous and completed between March 2014 and January 2016 by 1222 patients in 17 countries. All patients were diagnosed by a psychiatrist. General estimating equations were used to account for correlated data. RESULTS: Overall, 47% of older adults (age 60 years or older) used the Internet versus 87% of younger adults (less than 60 years). More education and having symptoms that interfered with regular activities increased the odds of using the Internet, while being age 60 years or older decreased the odds. Data from 187 older adults and 1021 younger adults were included in the analysis excluding missing values. CONCLUSIONS: Older adults with bipolar disorder use the Internet much less frequently than younger adults. Many older adults do not use the Internet, and technology tools are suitable for some but not all older adults. As more health services are only available online, and more digital tools are developed, there is concern about growing health disparities based on age. Mental health experts should participate in determining the appropriate role for digital tools for older adults with bipolar disorder.

Motivation factors for suicidal behavior and their clinical relevance in admitted psychiatric patients.

BACKGROUND: Suicidal behavior (SB) is a major, worldwide health concern. To date there is limited understanding of the associated motivational aspects which accompany this self-initiated conduct. AIMS: To develop a method for identifying motivational features associated with SB by studying admitted psychiatric patients, and to examine their clinical relevance. METHODS: By performing a factor analytic study using data obtained from a patient sample exhibiting high suicidality and a variety of SB methods, Motivations for SB Scale (MSBS) was constructed to measure the features. Data included assessments of DSM-IV psychiatric and personality disorders, suicide intent, depressive symptomatology, overt aggression, recent life events (RLEs) and methods of SB, collated from structured interviews. Association of identified features with clinical variables was examined by correlation analyses and MANCOVA. RESULTS: Factor analyses elicited a 4-factor solution composed of Interpersonal-testing (IT), Interpersonal-change (IC), Self-renunciation (SR) and Self-sustenance (SS). These factors were classified according to two distinctions, namely interpersonal vs. intra-personal directedness, and the level of assumed influence by SB or the relationship to prevailing emotions. Analyses revealed meaningful links between patient features and clinical variables. Interpersonal-motivations (IT and IC) were associated with overt aggression, low suicidality and RLE discord or conflict, while SR was associated with depression, high suicidality and RLE separation or death. Borderline personality disorder showed association with IC and SS. When self-strangulation was set as a reference SB method, self-cutting and overdose-taking were linked to IT and SS, respectively. CONCLUSIONS: The factors extracted in this study largely corresponded to factors from previous studies, implying that they may be useful in a wider clinical context. The association of these features with SB-related factors suggests that they constitute an integral part of the process leading to SB. These results provide a base for further research into clinical strategies for patient management and therapy.

Internet use by patients with bipolar disorder: Results from an international multisite survey.

There is considerable international interest in online education of patients with bipolar disorder, yet little understanding of how patients use the Internet and other sources to seek information. 1171 patients with a diagnosis of bipolar disorder in 17 countries completed a paper-based, anonymous survey. 81% of the patients used the Internet, a percentage similar to the general public. Older age, less education, and challenges in country telecommunications infrastructure and demographics decreased the odds of using the Internet. About 78% of the Internet users looked online for information on bipolar disorder or 63% of the total sample. More years of education in relation to the country mean, and feeling very confident about managing life decreased the odds of seeking information on bipolar disorder online, while having attended support groups increased the odds. Patients who looked online for information on bipolar disorder consulted medical professionals plus a mean of 2.3 other information sources such as books, physician handouts, and others with bipolar disorder. Patients not using the Internet consulted medical professionals plus a mean of 1.6 other information sources. The percentage of patients with bipolar disorder who use the Internet is about the same as the general public. Other information sources remain important.

Online information seeking by patients with bipolar disorder: results from an international multisite survey.

BACKGROUND: Information seeking is an important coping mechanism for dealing with chronic illness. Despite a growing number of mental health websites, there is little understanding of how patients with bipolar disorder use the Internet to seek information. METHODS: A 39 question, paper-based, anonymous survey, translated into 12 languages, was completed by 1222 patients in 17 countries as a convenience sample between March 2014 and January 2016. All patients had a diagnosis of bipolar disorder from a psychiatrist. Data were analyzed using descriptive statistics and generalized estimating equations to account for correlated data. RESULTS: 976 (81 % of 1212 valid responses) of the patients used the Internet, and of these 750 (77 %) looked for information on bipolar disorder. When looking online for information, 89 % used a computer rather than a smartphone, and 79 % started with a general search engine. The primary reasons for searching were drug side effects (51 %), to learn anonymously (43 %), and for help coping (39 %). About 1/3 rated their search skills as expert, and 2/3 as basic or intermediate. 59 % preferred a website on mental illness and 33 % preferred Wikipedia. Only 20 % read or participated in online support groups. Most patients (62 %) searched a couple times a year. Online information seeking helped about 2/3 to cope (41 % of the entire sample). About 2/3 did not discuss Internet findings with their doctor. CONCLUSION: Online information seeking helps many patients to cope although alternative information sources remain important. Most patients do not discuss Internet findings with their doctor, and concern remains about the quality of online information especially related to prescription drugs. Patients may not rate search skills accurately, and may not understand limitations of online privacy. More patient education about online information searching is needed and physicians should recommend a few high quality websites.

Influence of light exposure during early life on the age of onset of bipolar disorder.

BACKGROUND: Environmental conditions early in life may imprint the circadian system and influence response to environmental signals later in life. We previously determined that a large springtime increase in solar insolation at the onset location was associated with a younger age of onset of bipolar disorder, especially with a family history of mood disorders. This study investigated whether the hours of daylight at the birth location affected this association. METHODS: Data collected previously at 36 collection sites from 23 countries were available for 3896 patients with bipolar I disorder, born between latitudes of 1.4 N and 70.7 N, and 1.2 S and 41.3 S. Hours of daylight variables for the birth location were added to a base model to assess the relation between the age of onset and solar insolation. RESULTS: More hours of daylight at the birth location during early life was associated with an older age of onset, suggesting reduced vulnerability to the future circadian challenge of the springtime increase in solar insolation at the onset location. Addition of the minimum of the average monthly hours of daylight during the first 3 months of life improved the base model, with a significant positive relationship to age of onset. Coefficients for all other variables remained stable, significant and consistent with the base model. CONCLUSIONS: Light exposure during early life may have important consequences for those who are susceptible to bipolar disorder, especially at latitudes with little natural light in winter. This study indirectly supports the concept that early life exposure to light may affect the long term adaptability to respond to a circadian challenge later in life.

Relationship between sunlight and the age of onset of bipolar disorder: an international multisite study.

BACKGROUND: The onset of bipolar disorder is influenced by the interaction of genetic and environmental factors. We previously found that a large increase in sunlight in springtime was associated with a lower age of onset. This study extends this analysis with more collection sites at diverse locations, and includes family history and polarity of first episode. METHODS: Data from 4037 patients with bipolar I disorder were collected at 36 collection sites in 23 countries at latitudes spanning 3.2 north (N) to 63.4 N and 38.2 south (S) of the equator. The age of onset of the first episode, onset location, family history of mood disorders, and polarity of first episode were obtained retrospectively, from patient records and/or direct interview. Solar insolation data were obtained for the onset locations. RESULTS: There was a large, significant inverse relationship between maximum monthly increase in solar insolation and age of onset, controlling for the country median age and the birth cohort. The effect was reduced by half if there was no family history. The maximum monthly increase in solar insolation occurred in springtime. The effect was one-third smaller for initial episodes of mania than depression. The largest maximum monthly increase in solar insolation occurred in northern latitudes such as Oslo, Norway, and warm and dry areas such as Los Angeles, California. LIMITATIONS: Recall bias for onset and family history data. CONCLUSIONS: A large springtime increase in sunlight may have an important influence on the onset of bipolar disorder, especially in those with a family history of mood disorders.