Risk and coaggregation of major psychiatric disorders among first-degree relatives of patients with bipolar disorder: a nationwide population-based study

2018 ◽  
Vol 49 (14) ◽  
pp. 2397-2404 ◽  
Author(s):  
Mu-Hong Chen ◽  
Ju-Wei Hsu ◽  
Kei-Lin Huang ◽  
Tung-Ping Su ◽  
Cheng-Ta Li ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Psychiatric Disorders ◽  
Population Based ◽  
Autism Spectrum ◽  
The Public ◽  
First Degree Relatives ◽  
Relative Risks ◽  
Dependent Relationship ◽  
Increased Risk ◽  
Bipolar Patients

AbstractBackgroundBipolar disorder is a highly heritable mental illness that transmits intergeneratively. Previous studies supported that first-degree relatives (FDRs), such as parents, offspring, and siblings, of patients with bipolar disorder, had a higher risk of bipolar disorder. However, whether FDRs of bipolar patients have an increased risk of schizophrenia, major depressive disorder (MDD), autism spectrum disorder (ASD), and attention deficit hyperactivity disorder (ADHD) remains unclear.MethodsAmong the entire population in Taiwan, 87 639 patients with bipolar disorder and 188 290 FDRs of patients with bipolar disorder were identified in our study. The relative risks (RRs) of major psychiatric disorders were assessed among FDRs of patients with bipolar disorder.ResultsFDRs of patients with bipolar disorder were more likely to have a higher risk of major psychiatric disorders, including bipolar disorder (RR 6.12, 95% confidence interval (CI) 5.95–6.30), MDD (RR 2.89, 95% CI 2.82–2.96), schizophrenia (RR 2.64, 95% CI 2.55–2.73), ADHD (RR 2.21, 95% CI 2.13–2.30), and ASD (RR 2.10, 95% CI 1.92–2.29), than the total population did. These increased risks for major psychiatric disorders were consistent across different familial kinships, such as parents, offspring, siblings, and twins. A dose-dependent relationship was also found between risk of each major psychiatric disorder and numbers of bipolar patients.ConclusionsOur study was the first study to support the familial coaggregation of bipolar disorder with other major psychiatric disorders, including schizophrenia, MDD, ADHD, and ASD, in a Taiwanese (non-Caucasian) population. Given the elevated risks of major psychiatric disorders, the public health government should pay more attention to the mental health of FDRs of patients with bipolar disorder.

Familial coaggregation of major psychiatric disorders in first-degree relatives of individuals with autism spectrum disorder: a nationwide population-based study

2020 ◽  
pp. 1-11
Author(s):  
Hohui E. Wang ◽  
Chih-Ming Cheng ◽  
Ya-Mei Bai ◽  
Ju-Wei Hsu ◽  
Kai-Lin Huang ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Psychiatric Disorders ◽  
Population Based ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Research Database ◽  
Population Based Study ◽  
First Degree Relatives ◽  
Relative Risks ◽  
Genetic And Environmental Factors

Abstract Background Family coaggregation of attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder (ASD), bipolar disorder (BD), major depressive disorder (MDD) and schizophrenia have been presented in previous studies. The shared genetic and environmental factors among psychiatric disorders remain elusive. Methods This nationwide population-based study examined familial coaggregation of major psychiatric disorders in first-degree relatives (FDRs) of individuals with ASD. Taiwan's National Health Insurance Research Database was used to identify 26 667 individuals with ASD and 67 998 FDRs of individuals with ASD. The cohort was matched in 1:4 ratio to 271 992 controls. The relative risks (RRs) and 95% confidence intervals (CI) of ADHD, ASD, BD, MDD and schizophrenia were assessed among FDRs of individuals with ASD and ASD with intellectual disability (ASD-ID). Results FDRs of individuals with ASD have higher RRs of major psychiatric disorders compared with controls: ASD 17.46 (CI 15.50–19.67), ADHD 3.94 (CI 3.72–4.17), schizophrenia 3.05 (CI 2.74–3.40), BD 2.22 (CI 1.98–2.48) and MDD 1.88 (CI 1.76–2.00). Higher RRs of schizophrenia (4.47, CI 3.95–5.06) and ASD (18.54, CI 16.18–21.23) were observed in FDRs of individuals with both ASD-ID, compared with ASD only. Conclusions The risk for major psychiatric disorders was consistently elevated across all types of FDRs of individuals with ASD. FDRs of individuals with ASD-ID are at further higher risk for ASD and schizophrenia. Our results provide leads for future investigation of shared etiologic pathways of ASD, ID and major psychiatric disorders and highlight the importance of mental health care delivered to at-risk families for early diagnoses and interventions.

scholarly journals Psychiatric illness and regression in individuals with Phelan-McDermid syndrome

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Teresa M. Kohlenberg ◽  
M. Pilar Trelles ◽  
Brittany McLarney ◽  
Catalina Betancur ◽  
Audrey Thurm ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Intellectual Disability ◽  
Psychiatric Disorders ◽  
Psychiatric Illness ◽  
Psychiatric Symptoms ◽  
Structured Interview ◽  
Autism Spectrum ◽  
Scaffolding Protein ◽  
International Registry ◽  
Increased Risk

Abstract Background Phelan-McDermid syndrome (PMS) is a genetic condition characterized by intellectual disability, speech and language deficits, hypotonia, autism spectrum disorder, and epilepsy. PMS is caused by 22q13.33 deletions or mutations affecting SHANK3, which codes for a critical scaffolding protein in excitatory synapses. SHANK3 variants are also known to be associated with an increased risk for regression, as well as for psychiatric disorders, including bipolar disorder and catatonia. This study aimed to further describe these phenomena in PMS and to explore any relationship between psychiatric illness and regression after early childhood. Methods Thirty-eight people with PMS were recruited to this study through the Phelan-McDermid Syndrome Foundation based on caregiver report of distinct development of psychiatric symptoms. Caregivers completed a clinician-administered semi-structured interview focused on eliciting psychiatric symptomatology. Data from the PMS International Registry were used to confirm genetic diagnoses of participants and to provide a larger sample for comparison. Results The mean age of the 38 participants was 24.7 years (range = 13 to 50; SD = 10.06). Females (31 of 38 cases; 82%) and sequence variants (15 of 38 cases; 39%) were over-represented in this sample, compared to base rates in the PMS International Registry. Onset of psychiatric symptoms occurred at a mean age of 15.4 years (range = 7 to 32), with presentations marked by prominent disturbances of mood. Enduring substantial loss of functional skills after onset of psychiatric changes was seen in 25 cases (66%). Symptomst indicative of catatonia occurred in 20 cases (53%). Triggers included infections, changes in hormonal status, and stressful life events. Conclusions This study confirms that individuals with PMS are at risk of developing severe neuropsychiatric illness in adolescence or early adulthood, including bipolar disorder, catatonia, and lasting regression of skills. These findings should increase the awareness of these phenotypes and lead to earlier diagnosis and the implementation of appropriate interventions. Our findings also highlight the importance of genetic testing in the work-up of individuals with intellectual disability and acute psychiatric illness or regression. Future research is needed to clarify the prevalence and nature of psychiatric disorders and regression among larger unbiased samples of individuals with PMS.

scholarly journals Autism risk following antidepressant medication during pregnancy

2017 ◽  
Vol 47 (16) ◽  
pp. 2787-2796 ◽  
Author(s):  
A. Viktorin ◽  
R. Uher ◽  
A. Reichenberg ◽  
S. Z. Levine ◽  
S. Sandin
Keyword(s):  
Cox Regression ◽  
Population Sample ◽  
Antidepressant Drugs ◽  
Antidepressant Medication ◽  
Population Based ◽  
Autism Spectrum ◽  
Relative Risks ◽  
Increased Risk ◽  
History Of ◽  
History Of Depression

BackgroundPrevious studies have examined if maternal antidepressant medication during pregnancy increase the risk of autism spectrum disorder (ASD) in the offspring, but the results have been conflicting.MethodsIn a population-based cohort of 179 007 children born in 2006 and 2007 and followed through 2014 when aged 7 and 8, we estimated relative risks (RRs) of ASD and 95% confidence intervals (CIs) from Cox regression in children exposed to any antidepressant medication during pregnancy, and nine specific antidepressant drugs. Analyses were adjusted for potential confounders and were conducted in the full population sample, and in a clinically relevant sub-sample of mothers with at least one diagnosis of depression or anxiety during life.ResultsThe adjusted RR of ASD in children of mothers who used antidepressant medication during pregnancy was estimated at 1.23 (95% CI 0.96–1.57), and at 1.07 (95% CI 0.80–1.43) in women with a history of depression or anxiety. Analyses of specific antidepressants initially revealed increased RRs of offspring ASD confined to citalopram and escitalopram (RR: 1.47; 95% CI 0.92–2.35) and clomipramine (RR: 2.86; 95% CI 1.04–7.82).ConclusionMedication with antidepressants during pregnancy does not appear to be causally associated with an increased risk of ASD in the offspring. Instead, the results suggest that the association is explained by factors related to the underlying susceptibility to psychiatric disorders. Based on these findings, the risk of ASD in the offspring should not be a consideration to withhold treatment with commonly used antidepressant drugs from pregnant women.

scholarly journals Incidence of ischaemic heart disease and stroke among people with psychiatric disorders: retrospective cohort study

2019 ◽  
Vol 217 (2) ◽  
pp. 442-449 ◽  
Author(s):  
Caroline A. Jackson ◽  
Joannes Kerssens ◽  
Kelly Fleetwood ◽  
Daniel J. Smith ◽  
Stewart W. Mercer ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Heart Disease ◽  
Psychiatric Disorder ◽  
Psychiatric Disorders ◽  
Ischaemic Heart Disease ◽  
Sociodemographic Factors ◽  
Deprivation Level ◽  
Relative Risks ◽  
Increased Risk ◽  
Over Time

BackgroundPsychiatric disorders are associated with increased risk of ischaemic heart disease (IHD) and stroke, but it is not known whether the associations or the role of sociodemographic factors have changed over time.AimsTo investigate the association between psychiatric disorders and IHD and stroke, by time period and sociodemographic factors.MethodWe used Scottish population-based records from 1991 to 2015 to create retrospective cohorts with a hospital record for psychiatric disorders of interest (schizophrenia, bipolar disorder or depression) or no record of hospital admission for mental illness. We estimated incidence and relative risks of IHD and stroke in people with versus without psychiatric disorders by calendar year, age, gender and area-based deprivation level.ResultsIn all cohorts, incidence of IHD (645 393 events) and stroke (276 073 events) decreased over time, but relative risks decreased for depression only. In 2015, at the mean age at event onset, relative risks were 2- to 2.5-fold higher in people with versus without a psychiatric disorder. Age at incidence of outcome differed by cohort, gender and socioeconomic status. Relative but not absolute risks were generally higher in women than men. Increasing deprivation conveys a greater absolute risk of IHD for people with bipolar disorder or depression.ConclusionsDespite declines in absolute rates of IHD and stroke, relative risks remain high in those with versus without psychiatric disorders. Cardiovascular disease monitoring and prevention approaches may need to be tailored by psychiatric disorder and cardiovascular outcome, and be targeted, for example, by age and deprivation level.

scholarly journals The association of dry eye syndrome and psychiatric disorders: a nationwide population-based cohort study

2019 ◽  
Author(s):  
Chiao-Ying Liang ◽  
Wai-Man Cheang ◽  
Chun-Yuan Wang ◽  
Keng-Hung Lin ◽  
Li-Chen Wei ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bipolar Disorder ◽  
Cohort Study ◽  
Psychiatric Disorders ◽  
Dry Eye ◽  
Population Based ◽  
Dry Eye Syndrome ◽  
Psychiatric Disease ◽  
Neurotic Disorders ◽  
Increased Risk

Abstract Background Several previous studies reported a greater prevalence of dry eye syndrome (DES) among patients with psychiatric diseases. The aim of this study is to investigate the prevalence and risk factors of DES in patients with psychiatric disorders (PD) using nationwide population-based data in Taiwan. Methods This population-based cohort study retrospectively identified patients with PD from 1997 to 2011. The main outcome measures were the prevalence of DES in these patients and associated risk factors. Results A total of 75,650 patients with PD (3,665 in the DES cohort and 71,985 in the non-DES cohort) were included in the final analysis. The majority of patients in the DES group were women (72.6%). The mean age of patients in the DES cohort was 62.2 ± 14.9, which was significantly older than those in the non-DES group (50.9 ± 17.5). The patients with DES had a significantly greater likelihood of having dementia, bipolar disorder, depression, and neurotic disorders. Conditional regression analyses revealed that patients with dry eye disease were more likely to have schizophrenia (OR = 1.34), bipolar disorder (OR = 1.9), depression (OR = 1.54), and neurotic disorders (OR = 1.62). In addition, patients with DES were more likely to use 1st generation anti-psychotics (OR=1.28) and had a lower risk of using 2nd generation anti-psychotics (OR=0.64) Conclusion The study demonstrated that dry eye syndrome is associated with an increased risk of psychiatric disease, especially depression, bipolar disorder, and neurotic disorders, after adjusting for the comorbidities.

scholarly journals Offspring psychopathology following preconception, prenatal and postnatal maternal bereavement stress

2013 ◽  
Vol 44 (1) ◽  
pp. 71-84 ◽  
Author(s):  
Q. A. Class ◽  
K. M. Abel ◽  
A. S. Khashan ◽  
M. E. Rickert ◽  
C. Dalman ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Suicide Attempt ◽  
Maternal Stress ◽  
Population Based ◽  
Autism Spectrum ◽  
Degree Relative ◽  
Early Stress ◽  
Completed Suicide ◽  
Hazard Ratios ◽  
Increased Risk

BackgroundPreconception, prenatal and postnatal maternal stress is associated with increased offspring psychopathology, but findings are inconsistent and need replication. We estimated associations between maternal bereavement stress and offspring autism spectrum disorder (ASD), attention deficit hyperactivity disorder (ADHD), bipolar disorder, schizophrenia, suicide attempt and completed suicide.MethodUsing Swedish registers, we conducted the largest population-based study to date examining associations between stress exposure in 738 144 offspring born 1992–2000 for childhood outcomes and 2 155 221 offspring born 1973–1997 for adult outcomes with follow-up to 2009. Maternal stress was defined as death of a first-degree relative during (a) the 6 months before conception, (b) pregnancy or (c) the first two postnatal years. Cox proportional survival analyses were used to obtain hazard ratios (HRs) in unadjusted and adjusted analyses.ResultsMarginal increased risk of bipolar disorder and schizophrenia following preconception bereavement stress was not significant. Third-trimester prenatal stress increased the risk of ASD [adjusted HR (aHR) 1.58, 95% confidence interval (CI) 1.15–2.17] and ADHD (aHR 1.31, 95% CI 1.04–1.66). First postnatal year stress increased the risk of offspring suicide attempt (aHR 1.13, 95% CI 1.02–1.25) and completed suicide (aHR 1.51, 95% CI 1.08–2.11). Bereavement stress during the second postnatal year increased the risk of ASD (aHR 1.30, 95% CI 1.09–1.55).ConclusionsFurther research is needed regarding associations between preconception stress and psychopathological outcomes. Prenatal bereavement stress increases the risk of offspring ASD and ADHD. Postnatal bereavement stress moderately increases the risk of offspring suicide attempt, completed suicide and ASD. Smaller previous studies may have overestimated associations between early stress and psychopathological outcomes.

No evidence of increased risk for schizophrenia or bipolar affective disorder in persons with aneuploidies of the sex chromosomes

2001 ◽  
Vol 31 (3) ◽  
pp. 425-430 ◽  
Author(s):  
O. MORS ◽  
P. B. MORTENSEN ◽  
H. EWALD
Keyword(s):  
Bipolar Disorder ◽  
Affective Disorder ◽  
Sex Chromosome ◽  
Bipolar Affective Disorder ◽  
Population Based ◽  
Turner’S Syndrome ◽  
Relative Risks ◽  
Central Register ◽  
Increased Risk ◽  
Sex Chromosome Aneuploidies

Background. Several case reports and reviews have suggested an increased incidence of schizophrenia or bipolar disorder among persons with sex chromosome aneuploidies, but this observation may have been caused by biased sampling.Methods. The 1122 individuals with sex chromosome aneuploidies registered in the Danish Cytogenetic Central Register were screened in the Danish Psychiatric Central Register for admissions with schizophrenia or bipolar affective disorder. Both registers are population based and have existed since 1968 and 1969 respectively. Relative risks were calculated for schizophrenia, bipolar affective disorder and either schizophrenia or bipolar disorder combined as one phenotype. Since hospitalization for a psychiatric disorder increases the probability that a cytogenetic examination is performed, the relative risks could be inflated, and they were therefore adjusted accordingly.Results. Aneuploidies of the X or Y chromosomes were not associated with an increased risk of schizophrenia or bipolar disorder. The occurrence of the combined phenotype including both schizophrenia and bipolar disorder was significantly reduced among persons with Turner's syndrome and significantly increased among individuals with the 47, XYY karyotype.Conclusions. This population-based study did not find evidence supporting the presence of risk alleles for schizophrenia or bipolar disorder on the X chromosome or the pseudoautosomal region on the Y chromosome. The findings of an increased risk for the combined phenotype to XYY males and the reduced risk for persons with Turner's syndrome are interesting but difficult to explain with present neurobiological knowledge and inconsistent with the other findings of the study.

scholarly journals Neurodevelopmental and psychiatric disorders in females with Turner syndrome: a population-based study

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Hanna Björlin Avdic ◽  
Agnieszka Butwicka ◽  
Anna Nordenström ◽  
Catarina Almqvist ◽  
Agneta Nordenskjöld ◽  
...  
Keyword(s):  
Psychiatric Disorder ◽  
Psychiatric Disorders ◽  
Turner Syndrome ◽  
Emotional Disorders ◽  
Conditional Logistic Regression ◽  
Population Based ◽  
Autism Spectrum ◽  
Clinical Criteria ◽  
Increased Risk ◽  
National Patient

Abstract Background Turner syndrome is the result of the partial or complete absence of an X chromosome in phenotypic girls. This can cause an array of medical and developmental difficulties. The intelligence quotient in females with Turner syndrome has previously been described as uneven, but considered within normal range. Although their social, intellectual, and psychiatric profile is described, it is unclear to what extent these females meet the clinical criteria for neurodevelopmental or psychiatric diagnoses. The aim of this study was to examine the prevalence of neurodevelopmental and psychiatric disorders in females with Turner syndrome. Methods A retrospective cohort study was performed with a total of 1392 females with Turner syndrome identified through the Swedish National Patient Register and compared with 1:100 age- and sex-matched controls from the general population. The associations between Turner syndrome and diagnoses of neurodevelopmental and/or psychiatric disorders were calculated using conditional logistic regression and is presented as estimated risk (odds ratio, OR, 95% confidence interval, CI) in females with Turner syndrome compared with matched controls. Results Females with Turner syndrome had a higher risk of neurodevelopmental or psychiatric disorder (OR 1.37, 95% CI 1.20–1.57), an eightfold increased risk of intellectual disability (OR 8.59, 95% CI 6.58–11.20), and a fourfold increased risk of autism spectrum disorder (OR 4.26, 95% CI 2.94‑6.18) compared with the controls. In addition, females with Turner syndrome had twice the risk of a diagnosis of schizophrenia and related disorders (OR 1.98, 95% CI 1.36–2.88), eating disorders (OR 2.03, 95% CI 1.42–2.91), and behavioral and emotional disorders with onset in childhood (OR 2.01, 95% CI 1.35–2.99). Conclusions Females with Turner syndrome have an increased risk of receiving a diagnosis of neurodevelopmental or psychiatric disorder. This warrants extensive assessment of intellectual and cognitive functions from early age, and increased psychiatric vigilance should be a part of lifelong healthcare for females with Turner syndrome.

scholarly journals Neurodevelopmental and Psychiatric Disorders in Females With Turner Syndrome: A Population-based Study

2020 ◽  
Author(s):  
Hanna Björlin Avdic ◽  
Agnieszka Butwicka ◽  
Anna Nordenström ◽  
Catarina Almqvist ◽  
Agneta Nordenskjöld ◽  
...  
Keyword(s):  
Psychiatric Disorder ◽  
Psychiatric Disorders ◽  
Turner Syndrome ◽  
Psychotic Disorders ◽  
Conditional Logistic Regression ◽  
Population Based ◽  
Autism Spectrum ◽  
Retrospective Case ◽  
Clinical Criteria ◽  
Increased Risk

Abstract Background: Turner syndrome is the result of a missing X chromosome, partially or completely, in phenotypic girls. This can cause an array of medical and developmental difficulties. The intelligence quote has previously been described as uneven but considered within normal range. Although a social, intellectual and psychiatric profile is described in females with Turner syndrome, it is unclear to what extent they meet the clinical criteria for neurodevelopmental or psychiatric diagnoses. The aim of this study was to examine the prevalence of neurodevelopmental and psychiatric disorders in females with Turner syndrome. Methods: A retrospective case-control study was performed with a total of 1392 females with Turner syndrome identified through the Swedish National Patient Register and compared with 1:100 age- and sex matched controls from the general population. The association between Turner syndrome and diagnoses of neurodevelopmental and/ or psychiatric disorders were calculated using conditional logistic regression and is presented as estimated risk (Odds ratio, OR, 95% Confidence interval, CI) in females with Turner syndrome compared with matched controls. Results: Females with Turner syndrome had higher risk of any neurodevelopmental or psychiatric disorder (OR 1.37, 95% Cl 1.20-1.57), an eightfold (OR 8.59, 95% CI 6.58-11.20) increased risk of intellectual disability and a fourfold (OR 4.26, 95% CI 2.94-6.18) increased risk of autism spectrum disorder compared with the controls. In addition, females with Turner syndrome had an increased risk of a diagnosis of psychotic disorders (OR 1.98, 95% Cl 1.36-2.88), eating disorders (OR 2.03, 95% Cl 1.42-2.91) and behavioral disorders (OR 2.01, 95% CI 1.35-2.99). Conclusions: Females with TS have an increased risk of being diagnosed with any neurodevelopmental and psychiatric disorder. This warrants extensive assessment of intellectual and cognitive functions from early ages and increased psychiatric vigilance should be a part of lifelong healthcare for females with TS.

Familial coaggregation of major psychiatric disorders among first-degree relatives of patients with obsessive-compulsive disorder: a nationwide study

2020 ◽  
pp. 1-8
Author(s):  
Mao-Hsuan Huang ◽  
Chih-Ming Cheng ◽  
Shih-Jen Tsai ◽  
Ya-Mei Bai ◽  
Cheng-Ta Li ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Psychiatric Disorders ◽  
Obsessive Compulsive Disorder ◽  
Autism Spectrum ◽  
Research Database ◽  
Dependent Manner ◽  
Obsessive Compulsive ◽  
Compulsive Disorder ◽  
First Degree Relatives ◽  
Dose Dependent

Abstract Background Whether the first-degree relatives (FDRs) of patients with obsessive-compulsive disorder (OCD) have an increased risk of the major psychiatric disorders, namely schizophrenia, bipolar disorder, OCD, major depressive disorder (MDD), autism spectrum disorder (ASD), and attention deficit hyperactivity disorder (ADHD), remains unclear. Methods Using the Taiwan National Health Insurance Research Database with the whole population sample size (n = 23 258 175), 89 500 FDRs, including parents, offspring, siblings, and twins, of patients with OCD were identified in our study. The relative risks (RRs) of major psychiatric disorders were assessed among FDRs of patients with OCD. Results FDRs of patients with OCD had higher RRs of major psychiatric disorders, namely OCD (RR 8.11, 95% confidence interval (CI) 7.68–8.57), bipolar disorder (RR 2.85, 95% CI 2.68–3.04), MDD (RR 2.67, 95% CI 2.58–2.76), ASD (RR 2.38, 95% CI 2.10–2.71), ADHD (RR 2.19, 95% CI 2.07–2.32), and schizophrenia (RR 1.97, 95% CI 1.86–2.09), compared with the total population. Different familial kinships of FDRs, such as parents, offspring, siblings, and twins consistently had increased risks for these disorders. In addition, a dose-dependent relationship was found between the numbers of OCD probands and the risk of each major psychiatric disorder. Conclusions The FDRs, including parents, offspring, siblings, and twins, of patients with OCD have a higher risk of OCD, schizophrenia, bipolar disorder, MDD, ADHD, and ASD. The familial co-aggregation of OCD with OCD and other major psychiatric disorders was existent in a dose-dependent manner. Given the increased risks of psychiatric disorders, medical practitioners should closely monitor the mental health of the FDRs of patients with OCD.

Sign in / Sign up

Export Citation Format

Share Document