The influence of reported ADHD and substance abuse on suicidal ideation in a non-clinical sample of young men

Risks Associated With Undiagnosed ADHD and/or Autism: A Mixed-Method Systematic Review

BACKGROUND

The two most prevalent neurodevelopmental disorders-Attention Deficit Hyperactivity Disorder (ADHD) and Autism (ASD)-(ASD/ADHD) strongly impact individuals' functions. This is worsened when individuals are undiagnosed and risks such as increased imprisonments, depression or drug misuse are often observed. This systematic review synthesizes the risks associated with late/undiagnosed ASD/ADHD.

METHODS

Four databases were searched (Medline, Scopus, PsychInfor, and Embase). Published studies exploring the impact of undiagnosed ASD/ADHD were included. Exclusion criteria included, lack of diagnosis status, studies not solely on ASD or ADHD, gray literature and studies not in English. The findings were summarize through a narrative synthesis.

RESULTS

Seventeen studies were identified, 14 on ADHD and three on ASD. The narrative synthesis identified three main themes: (1) Health, (2) Offending behavior, and (3) Day-to-day impact. The risks highlighted a significant impact on mental wellbeing and social interactions, higher risks of substance abuse, accidents and offending behavior as well as lower levels of income and education.

DISCUSSION

The findings suggest that undiagnosed ASD/ADHD is linked to many risks and negative outcomes affecting individuals, their families, and the wider society. The restricted number of studies on ASD are a limitation to the generalization of these findings Implications for research and practice are discussed, highlighting the importance of screening and acknowledging the possibility of ASD/ADHD in many settings such as psychiatric and forensic.

Investigation of the interpersonal theory of suicide in the context of attention-deficit/hyperactivity disorder symptomatology and suicide ideation

OBJECTIVE

The current study examines components of the Interpersonal Theory of Suicide as mediators of the association between attention-deficit/hyperactivity disorder (ADHD) symptoms and suicide ideation in college students with elevated depressive symptoms. Specifically, indirect effects of perceived burdensomeness and thwarted belongingness were simultaneously evaluated on the association between self-reported ADHD symptoms and suicide ideation, controlling for gender and levels of depression.

METHOD

Participants were 217 college students with elevated depressive symptoms (M_age  = 20.72 years old; SD = 3.74) who participated in a larger study on mood and well-being. The sample was predominantly female (77.9% female) and Hispanic (72.7%).

RESULTS

In a multivariate mediation model controlling for gender and depressive symptoms, there were significant indirect effects of perceived burdensomeness and thwarted belongingness on the association between self-reported ADHD symptoms and suicide ideation.

CONCLUSION

Perceived burdensomeness and thwarted belongingness may represent promising targets for preventing suicide ideation in individuals with elevated ADHD symptoms.

Attention-Deficit/Hyperactivity Disorder and Suicidal Risk in Major Depression: Analysis of 141,530 Adolescent Hospitalizations

Objectives

We conducted a cross-sectional study to understand the differences in demographics and psychiatric comorbidities in adolescents with major depressive disorder (MDD) and assess the risk of suicidality due to comorbid attention-deficit/hyperactivity disorder (ADHD).

Methods

We included 141,530 adolescents (age, 12 to 18 years) with a primary diagnosis of MDD from the nationwide inpatient sample (NIS, 2012-2014), and grouped by a comorbid diagnosis of ADHD (N = 22,665, 16%). Logistic regression analysis was used to measure the demographic predictors for ADHD in adolescents with MDD, and to measure the suicidal risk in ADHD versus non-ADHD.

Results

Comorbid ADHD was prevalent in whites (71.9%), and males had two times higher odds (95% CI 2.25-2.41) compared to females. The most prevalent comorbidities seen in ADHD-cohort were anxiety disorders (46.3%) and substance abuse (20.1%) with 1.3 times higher odds of substance abuse (95% CI 1.41-1.65) compared to non-ADHD. Suicidal behaviors were seen in a higher proportion of the ADHD cohort compared to the non-ADHD cohort (54.3% vs. 52.7%). ADHD and suicidal behaviors relationship was statistically significant but had a very small positive association (OR 1.04, 95% CI 1.01-1.08) after controlling for demographic confounders and comorbidities. There was a significant increase in the number of MDD hospitalization with ADHD for suicidal behaviors from 51.1% (N = 3,360) in 2012 to 58.2% (N = 5,115) in 2014.

Conclusion

There exists a significant but small positive association between suicidal behaviors and comorbid ADHD in MDD adolescents. The suicide rate has increased by 52.2% during the study period in depressed adolescents with ADHD. This calls for early diagnosis and management of ADHD and early-onset depression in adolescents to prevent suicide risk.