The impact of attention-deficit hyperactivity disorder across the lifespan on substance use disorders

Prevalence of Undiagnosed Attention Deficit Hyperactivity Disorder (ADHD) Symptoms in the Young Adult Population of the United Arab Emirates: A National Cross-Sectional Study

BACKGROUND

Attention deficit hyperactivity disorder (ADHD), a globally prevalent behavioural disorder, remains underdiagnosed, particularly among adults. This issue is exacerbated in the Arab region due to stigma and insufficient healthcare facilities and professionals. Despite the United Arab Emirates (UAE) efforts to improve mental healthcare, shortcomings persist. No studies in the UAE currently assesses the appropriateness of the screening system for ADHD and other behavioural issues. Furthermore, prevalence rates of ADHD, particularly within the young adult population, are absent.

AIM

To estimate the prevalence of ADHD amongst young adults attending university in UAE and examine its relationship with gender and academic outcomes.

METHODS

A cross-sectional, correlational design was used. Young adults in their first year at university were recruited from different academic institutions across the UAE. The study utilized the Adult ADHD Self-Report Scale (ASRS) for data collection.

RESULTS

A sample of 406 young adults, aged between 18 and 20 years of age were recruited. Approximately, 34.7% (n = 141) reported symptoms suggestive of probable ADHD. Significantly lower grade point average marks were observed in participants with ADHD symptoms (M = 3.15) compared to those without (M = 3.35). Females reported symptoms of probable ADHD at higher rates than males, indicating possibly a potential screening deficiency and a potential stigma consequence.

CONCLUSIONS

The study demonstrates a high prevalence of probable ADHD in young adults, particularly among females attending university in the United Arab Emirates. Implications for early screening, service provision, and greater professional health training on this disorder are required.

Impulsive Personality Traits Mediate the Relationship Between Attention-Deficit/Hyperactivity Disorder Symptoms and Psychiatric Comorbidity among Patients with Severe Alcohol Use Disorder

Attention-deficit/hyperactivity disorder (ADHD) is an established risk factor for developing alcohol use disorder (AUD), and AUD-ADHD comorbidity is associated with additional psychiatric diagnoses. Several lines of evidence support the role of impulsivity as a pathway of these relationships; however, impulsivity is not a unitary construct. Thus, we sought to explore whether separate aspects of impulsivity may explain the relationship between ADHD symptoms and psychiatric comorbidity among inpatients (N = 136) with AUD. Methods: We assessed ADHD symptoms (childhood ADHD [Wender Utah Rating Scale], adult ADHD [Adult ADHD self-report scale]), health-related quality of life (HRQL; EQ-5D-5L), psychiatric comorbidity (Mini International Neuropsychiatric Interview), and impulsive personality traits (Urgency, Premeditation, Perseverance, Sensation seeking [UPPS] scale). Results: 19% of patients screened positive in the retrospective assessment of childhood ADHD, and 17% for adult ADHD. Participants reported moderate levels of problem severity in the HRQL dimensions, and 65% had ≥1 current psychiatric disorders other than AUD and ADHD. Multiple mediation indicated that there was a significant direct effect of childhood ADHD symptoms on psychiatric comorbidity (β = 0.224, 95% CI [0.080, 1.114]), and indirect effects of both reacting impetuously when experiencing negative emotions (negative urgency; β = 0.999, 95% CI [0.043, 0.461]) and the tendency to not finish tasks (lack of perseverance; β = 0.075, 95% CI [0.002, 0.297]). Conclusions: The subcomponents of impulsivity to react rashly when experiencing negative emotions and the tendency to not persist in activities seem to contribute to the relationship between ADHD symptoms (particularly those in childhood) and psychiatric comorbidity among patients with severe AUD.

ADHD Research in Arab Countries: A Systematic Review of Literature

OBJECTIVE

No systematic reviews could be identified in the literature that address ADHD research in Arab countries. In an attempt to help fill this gap, this systematic review was undertaken.

METHOD

An electronic literature search of ADHD studies carried out in Arab countries was done by using Google Scholar, PsycINFO, PubMed, Education Resources Information Center (ERIC), and Arabpsynet.

RESULTS

The search yielded 58 studies (10 studies on psychoeducational and social aspects of ADHD, 26 prevalence studies and two reviews of epidemiology of ADHD, and 22 studies on risk factors and comorbidities in ADHD).

CONCLUSION

Although there has been an increase in ADHD research in Arab countries in recent years, this research remains relatively sparse and used methods and procedures that limit the generalizability of the findings.

Mini Review: Socio-Cultural Influences on the Link Between ADHD and SUD

Attention-deficit/hyperactivity disorder (ADHD) is a risk factor for the development and persistence of substance use disorders (SUD). The prevalence of ADHD in patients with SUD varies across countries and cultures. So far, cross-cultural variance in ADHD prevalence rates among SUD patients was mainly ascribed to methodological differences between studies, leaving the role of societal and cultural practices in the ADHD-SUD link hardly acknowledged. The aim of the present mini review is to address this gap in the literature by providing evidence for the effect of socio-cultural practices on the ADHD-SUD link and suggesting directions for future research. To achieve this goal, we map the influence of socio-cultural factors on the ADHD-SUD link along three lines of research. The first line is concerned with the role of socio-cultural factors in the recognition, diagnosis and treatment of childhood ADHD. The second line of research is concerned with socio-cultural influences on substance use (e.g., religion, ethnic identity, acculturation, and socio-economic status). Finally, we describe potential socio-cultural factors which may operate as mechanisms for reducing or increasing access to substance abuse treatment (e.g., ethnic disparities in health care utilization). Identifying socio-cultural influences on the ADHD-SUD link may provide further insight into the bidirectional association between ADHD and SUD in different contexts and encourage future research in the field.

Impulsive Personality Traits Mediate the Relationship Between Adult Attention-Deficit/Hyperactivity Symptoms and Alcohol Dependence Severity

BACKGROUND

While the role of attention-deficit/hyperactivity disorder (ADHD) as a risk factor for developing alcohol use disorder (AUD) has been established, the underlying pathways connecting the two are still not fully understood. Overlapping constructs such as impulsivity may explain the increased risk for developing AUD in individuals with ADHD.

METHODS

In this study, we assessed whether adult ADHD symptoms increase the odds of having a diagnosis of AUD. Furthermore, we tested whether facets of impulsivity explained the relationship between ADHD symptoms and alcohol dependence (AD) severity.

RESULTS

In a logistic regression of 749 participants (464 = AD, 285 = controls), overall adult ADHD symptoms, and more specifically, symptoms of hyperactivity/restlessness and problems with self-concept, increased the odds of having a diagnosis of AD. Within the AD sample, we found that impulsivity mediated the relationship between adult ADHD symptoms and AD severity. In particular, negative and positive urgency meditated the relationship of overall adult ADHD symptoms, and symptoms of hyperactivity/restlessness and problems with self-concept with AD severity.

CONCLUSIONS

These results highlight the importance of looking at cohorts of ADHD symptoms and facets of impulsivity to assess the risk of developing AUD. They also suggest potential avenues for intervention strategies in individuals with preexisting adult ADHD symptoms who are seeking treatment for AUD.