Attention-deficit/hyperactivity disorder among adolescents: a review of the diagnosis, treatment, and clinical implications

Empirically derived symptom profiles in adults with attention-Deficit/hyperactivity disorder: An unsupervised machine learning approach

BACKGROUND

Attention-deficit/hyperactivity disorder (ADHD) is associated with various cognitive, behavioral, and mood symptoms that complicate diagnosis and treatment. The heterogeneity of these symptoms may also vary depending on certain sociodemographic factors. It is therefore important to establish more homogenous symptom profiles in patients with ADHD and determine their association with the patient's sociodemographic makeup. The current study used unsupervised machine learning to identify symptom profiles across various cognitive, behavioral, and mood symptoms in adults with ADHD. It was then examined whether symptom profiles differed based on relevant sociodemographic factors.

METHODS

Participants were 382 adult outpatients (62% female; 51% non-Hispanic White) referred for neuropsychological evaluation for ADHD.

RESULTS

Employing Gaussian Mixture Modeling, we identified two distinct symptom profiles in adults with ADHD: "ADHD-Plus Symptom Profile" and "ADHD-Predominate Symptom Profile." These profiles were primarily differentiated by internalizing psychopathology (Cohen's d = 1.94-2.05), rather than by subjective behavioral and cognitive symptoms of ADHD or neurocognitive test performance. In a subset of 126 adults without ADHD who were referred for the same evaluation, the unsupervised machine learning algorithm only identified one symptom profile. Group comparison analyses indicated that female patients were most likely to present with an ADHD-Plus Symptom Profile (χ2 = 5.43, p < .001).

CONCLUSION

The machine learning technique used in this study appears to be an effective way to elucidate symptom profiles emerging from comprehensive ADHD evaluations. These findings further underscore the importance of considering internalizing symptoms and patients' sex when contextualizing adult ADHD diagnosis and treatment.

Clinical practice guidelines for attention-deficit/hyperactivity disorder: recent updates

Attention-deficit/hyperactivity disorder (ADHD) is one of the most common neurodevelopmental disorders found in children and adolescents. The American Academy of Pediatrics (AAP) first published a clinical practice guideline on ADHD in 2000, which was revised in 2011 and republished together with an accompanying process-of-care algorithm. More recently, the 2019 clinical practice guideline revision was published. Since the 2011 guideline, the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5), was released. In addition, the Society of Developmental and Behavioral Pediatrics (SDBP) recently released another clinical practice guideline for complex ADHD. Although there are nonessential changes reflected in these updates, a number of changes have still been made; for example, the DSM-5 criteria lowered the diagnostic threshold for ADHD in older teens and adults. Additionally, the criteria were revised to facilitate application to older teens and adults, and a comorbid diagnosis with autism spectrum disorder is now allowed. Meanwhile, the 2019 AAP guideline added the recommendation related to comorbid conditions with ADHD. Lastly, SDBP developed a complex ADHD guideline, covering areas such as comorbid conditions, moderate-to-severe impairment, treatment failure, and diagnostic uncertainty. In addition, other national ADHD guidelines have been published, as have European guidelines for managing ADHD during the coronavirus disease 2019 pandemic. To facilitate ADHD management in a primary care, it is important to provide and review clinical guidelines and recent updates. In this article, we will review and summarize the recent clinical guidelines and their updates.

Case report: ADHD and prognosis in tyrosinemia type 1

Neurometabolic disorders such as tyrosinemia type 1 (TYRSN1) may interfere with brain metabolism and show symptoms of attention-deficit hyperactivity disorder (ADHD) in patients treated with the enzyme inhibitor nitisinone [2-(2-nitro-4-trifluoromethylbenzoyl)-1,3-cyclohexanedione, NTBC]. It has been reported that ADHD treatment improves treatment compliance, which is imperative for the long-term prognosis of patients with TYRSN1. In this study, we report the case of a male patient who was diagnosed with TYRSN1 at 3 months of age and was subsequently treated with NTBC, restricted protein intake, and amino acids supplementation. At 7 years of age, he was referred for neuropsychiatric assessment, diagnosed with ADHD, and treated with methylphenidate. The effects of the treatment were monitored via parental interviews, questionnaires covering ADHD symptoms, and a continuous performance test. A reduction in ADHD symptoms, particularly inattentiveness, was observed across all measures. The early identification of ADHD and the treatment of neurometabolic disorders, such as TYRSN1, may be important from a lifetime perspective as this may improve the prognosis of the medical condition as well.

The domain-variant indirect association between electrophysiological response to reward and ADHD presentations is moderated by dopaminergic polymorphisms

BACKGROUND

Understanding the etiopathogenesis of attention-deficit/hyperactivity disorder (ADHD) may necessitate decomposition of the heterogeneous clinical phenotype into more homogeneous intermediate phenotypes. Reinforcement sensitivity is a promising candidate, but the exact nature of the ADHD-reward relation - including how, for whom, and to which ADHD dimensions atypicalities in reward processing are relevant - is equivocal.

METHODS

Aims were to examine, in a carefully phenotyped sample of adolescents (N = 305; Mage = 15.30 years, SD = 1.07; 39.7% girls), whether functional dopaminergic polymorphisms implicated in both reward processing and ADHD (1) are differentially associated with event-related potentials (ERPs) of reward anticipation at distinct levels of ADHD risk (nno risk = 174, nat-risk = 131, ndiagnosed = 83); and (2) moderate the indirect effect of dispositional affectivity on the association between ERPs and ADHD domains.

RESULTS

In adolescents at-risk for or with ADHD, carrying a hypodopaminergic allele was associated with enhanced ERPs of attention allocation to cue and attenuated ERPs of anticipatory attention to feedback. No associations were observed in adolescents not at-risk for or without ADHD. Controlling for age and sex, both the negative indirect effect of positive affectivity (PA) on the association between ERPs and inattention and the positive indirect effect of PA on the association between ERPs and hyperactivity/impulsivity were supported only for those with high activity dopamine transporter (DAT) alleles.

CONCLUSIONS

Reward and affective processing are promising intermediate phenotypes relevant to disentangling ADHD developmental pathways. Consistent with developmental multifinality, through the successive effects of reward anticipation and positive affectivity, functional dopaminergic variants may confer protection against inattention or risk for hyperactivity/impulsivity.

Enabling successful life engagement in young people with ADHD: new components beyond adult models of recovery

PURPOSE

To examine the lived experiences of young people successfully managing life with ADHD and investigate the applicability of adult models of Recovery to these individuals.

METHODS

Twenty-seven young people aged 15-31 years participated in qualitative interviews. Participants' success was indicated by employment, school attendance, absence of acute mental health episodes, or absence of chronic alcohol or drug use. Thematic analysis identified specific components of their life successes and challenges.

RESULTS

The emergent framework comprised four elements: (i) Recovernance (RE) (a portmanteau merging 'Recovery' and 'Maintenance'; ongoing adjustment to maintain one's personal best without an end point); (ii) Personal Optimization (PO) (continuously striving to maximize function and adjust one's goals given fluctuating impairments and internal resources); (iii) Self (S) (facing internal challenges and developing internal resilience); and (iv) Environment (E) (facing external challenges and fostering external resilience). These four elements yielded the acronym 'REPOSE'.

CONCLUSIONS

Recovery in young people with ADHD was not a linear journey, with many missteps leading to greater self-knowledge, life skills and mastery. Progress was leveraged on securely anchored internal and external resilience factors against the prospect of setbacks. Findings provide new concepts and novel lexicons to extend existing concepts in Recovery. Implications for rehabilitationCounselling and therapy for young people with ADHD should foster self-understanding, goal setting and self-vigilance as an ongoing process to build their capacity to tackle setbacks and adversities.Counselling and therapy for young people with ADHD focus on a strengths-based approach building internal and external resources, such as developing skills and establishing social connections that build infrastructure in the environment for meaningful participation.

Right Superior Frontal Gyrus Cortical Thickness in Pediatric ADHD

OBJECTIVE

We investigated the right Superior Frontal Gyrus (right-SFG) and Anterior Cingulate Cortex (ACC) in children with ADHD and their clinical relevance with Executive Function (EF) and ADHD symptom severity.

METHODS

About 26 children with ADHD and 24 typically developing children (TDC; 7‒16 years) underwent Magnetic Resonance Imaging (MRI) and completed an EF assessment battery.

RESULTS

Significantly thinner right-SFG in the ADHD group was found compared to the TDC group (t (48) = 2.81, p = .007, Cohen's d = 0.84). Linear regression models showed that 12.5% of inattention, 13.6% of hyperactivity, and 9.0% of EF variance was accounted for by the right-SFG thickness.

CONCLUSIONS

Differences in the right-SFG thickness were found in our ADHD group and were associated with parent ratings of inattentive and hyperactive symptoms as well with EF ratings. These results replicate previous findings of thinner right-SFG and are consistent with the delayed cortical maturation theory of ADHD.

The impacts of a combined exercise on executive function in children with ADHD: A randomized controlled trial

PURPOSE

The purpose of this study was to examine the effects of aerobic and neurocognitive exercise with moderate-to-vigorous physical activity levels on executive functions (EFs) and sleep quality in children with attention-deficit/hyperactivity disorder (ADHD).

METHODS

In a parallel two-group randomized controlled trial (RCT) design, 80 children with ADHD aged 6-12 years (Mage = 8.46 ± 1.50) were assigned to either a 12-week combined aerobic-and neurocognitive-exercise experimental group (EG; three sessions per week for 60-min) or a wait-list control group (CG). Forty children with typical development aged 6-12 years (Mage = 8.49 ± 1.51) were recruited as healthy controls (HC). A Polar heart rate (HR) monitor was used to track the exercise intensity (60%-80% predicted HRmax) throughout the intervention. Three core EFs (inhibitory control [IC], working memory [WM], and cognitive flexibility [CF]) were assessed by computer-based neurocognitive tasks, and sleep quality and physical activity (PA) levels were assessed by self-report questionnaires.

RESULTS

The results showed that the exercise intervention was beneficial for improving three core EFs, shortening sleep latency and decreasing sleep disturbances. The intervention effects on EFs and sleep quality appeared to be sustained for at least 12 weeks in EG. In addition, children with ADHD after intervention showed non-significant differences in IC, CF and multiple sleep quality outcomes compared with HC. Furthermore, a significant PA-EFs-sleep correlation was found in children with ADHD after the intervention.

CONCLUSION

The findings suggest that a 12-week combined aerobic and neurocognitive exercise intervention appears to be an effective treatment program for EFs and sleep quality in children with ADHD.

Clinical Efficacy Evaluation of Psychological Nursing Intervention Combined with Drugs Treatment of Children with ADHD under Artificial Intelligence

ADHD in children is one of the most common neurodevelopmental disorders. It is manifested as inattention, hyperactivity, impulsiveness, and other symptoms that are inconsistent with the developmental level in different occasions, accompanied by functional impairment in social, academic, and occupational aspects. At present, the treatment for children with ADHD is mainly based on psychological nursing intervention combined with drug therapy. Therefore, the actual efficacy evaluation of this treatment regimen is very important. Neural networks are widely used in smart medical care. This work combines artificial intelligence with the evaluation of clinical treatment effects of ADHD children and designs an intelligent model based on neural networks for evaluating the clinical efficacy of psychological nursing intervention combined with drug treatment of children with ADHD. The main research is that, for the evaluation of clinical treatment effect of ADHD in children, this paper proposes a 1D Parallel Multichannel Network (1DPMN), which is a convolutional neural network. The results show that network models can extract different data features through different channels and can achieve high accuracy evaluation of clinical efficacy of ADHD in children. On the basis of the model, performance is improved through the study of Adam optimizer to speed up the model convergence, adopts batch normalization algorithm to improve stability, and uses Dropout to improve the generalization ability of the network. Aiming at the problem of too many parameters, the 1DPMN is optimized through the principle of local sparseness, and the model parameters are greatly reduced.

Positive Child Personality Factors in Children with ADHD

OBJECTIVE

Attention-Deficit/Hyperactivity Disorder (ADHD) is a prevalent neurodevelopmental disorder. While previous studies have shown substantial impact of ADHD across multiple domains, relatively little attention has been devoted to studying positive personality factors in individuals with ADHD. To address this, the current study examined strength-based factors in children with ADHD in relation to their social skills.

METHOD

Sixty-four children (aged 8-12 years) with ADHD completed questionnaires related to their social skills and strength-based factors (e.g., optimism, resilience, self-concept, and coping skills).

RESULTS

Findings indicated significant differences between different levels of social skills in children with ADHD, with children with higher social skills reporting higher levels of resiliency, greater behavioral competence, and greater prosocial attitudes than those with lower social skills.

CONCLUSIONS

The results highlight the importance of fostering strong social skills in children with ADHD, leading them to perceive themselves as competent and resilient.

Psychoeducation Intervention Effectiveness to Improve Social Skills in Young People with ADHD: A Meta-Analysis

OBJECTIVE

Attention Deficit Hyperactivity Disorder (ADHD) can be associated with limited understanding of the condition and poor social skills. Some evidence favors a psychoeducational approach, but little is known about the effectiveness of psychoeducation.

METHODS

Systematic review and meta-analysis of studies assessing psychoeducational interventions that aim to improve social skills of young people with ADHD.

RESULTS

Ten studies, including 943 participants, reported across 13 papers met the inclusion criteria. Although effect sizes were small, findings suggest the included interventions significantly improved social skills in young people with ADHD.

CONCLUSIONS

Results show promise for psychoeducational behavioral interventions . However, the recommendations that can be developed from existing evidence are somewhat limited by the low quality of studies. Further rigorous trials are needed. In addition, future research should consider the long-term outcomes for these interventions, they should be iteratively co-designed and research should consider the context they intend to be delivered in.

Shared Predictors of Academic Achievement in Children with ADHD: A Multi-Sample Study

OBJECTIVE

To identify common and shared predictors of academic achievement across samples of children with ADHD.

METHOD

Two clinically referred samples from New Zealand (1 n = 88, 82% boys; 2 n = 121, 79% boys) and two community samples from the United States (3 n = 111, 65% boys; 4 n = 114, 69% boys), completed similar diagnostic, cognitive and academic assessments. Hierarchical multiple regression analyses identified significant predictors of word reading, spelling, and math computation performance in each sample.

RESULTS

Entered after IQ, semantic language, age at testing, and verbal working memory emerged as consistent predictors of achievement across academic subjects and samples. Visual-spatial working memory contributed to variance in math performance only. Symptom severity explained limited variance.

CONCLUSIONS

We recommend evaluations of children with ADHD incorporate assessments of working memory and language skills. Classroom/academic interventions should accommodate reduced working memory and address any identified language weaknesses.

Mediating Effect of Motor Competence on the Relationship between Physical Activity and Quality of Life in Children with Attention Deficit Hyperactivity Disorder

This study examined the mediating role of motor competence in the association between physical activity (PA) and quality of life (QoL) and the moderating role of age in the indirect relationship between PA and QoL in children with ADHD. Eighty-six children aged 6-12 years old (M age = 8.45, SD = 1.40, 17.4% girls) with the diagnosis of ADHD were recruited in this study. Participants wore a wGT3X-BT accelerometer on their wrist for seven consecutive days to measure PA. Motor competence was measured by the Test of Gross Motor Development-Third Edition (TGMD-3). Quality of life (QoL) was assessed by the parent-reported Chinese version of the Pediatric Quality of Life Inventory. MVPA was positively associated with object control skills but was not directly related to QoL. Using the bootstrapping method, the indirect effect of object control was found between MVPA and social functioning (0.10, 95%CI = [0.01, 0.21]), school functioning (0.09, 95%CI = [0.01, 0.18]), and overall QoL (0.07, 95%CI = [0.01, 0.16]), supporting the full mediation effect. Moderated mediation analysis further revealed that age strengthened the indirect effect from MVPA to social and school functioning via object control. Findings of this study indicated that MVPA is positively associated with object control skills, which in turn, is related to psychological aspects of QoL in children with ADHD. Age was found to moderate the indirect mediation paths. The findings may inform future expeditions on designing an effective intervention that helps to improve MC and QoL in children with ADHD.

Dynamic Functional Connectivity Reveals Abnormal Variability in the Amygdala Subregions of Children With Attention-Deficit/Hyperactivity Disorder

Objective: This study investigates whether the dynamic functional connectivity (dFC) of the amygdala subregions is altered in children with attention-deficit/hyperactivity disorder (ADHD).

Methods: The dFC of the amygdala subregions was systematically calculated using a sliding time window method, for 75 children with ADHD and 20 healthy control (HC) children.

Results: Compared with the HC group, the right superficial amygdala exhibited significantly higher dFC with the right prefrontal cortex, the left precuneus, and the left post-central gyrus for children in the ADHD group. The dFC of the amygdala subregions showed a negative association with the cognitive functions of children in the ADHD group.

Conclusion: Functional connectivity of the amygdala subregions is more unstable among children with ADHD. In demonstrating an association between the stability of functional connectivity of the amygdala and cognitive functions, this study may contribute by providing a new direction for investigating the internal mechanism of ADHD.

Presenting problem profiles for adolescents with ADHD: differences by sex, age, race, and family adversity

BACKGROUND

Adolescents with attention-deficit/hyperactivity disorder (ADHD) experience developmentally distinct challenges from children and adults with ADHD. Yet no work in this age group identifies treatment-related phenotypes that can inform treatment matching, development of tailored treatments, and screening efforts.

METHOD

This study uses Latent Profile Analysis to detect unique presenting problem profiles among adolescents with ADHD and to test whether these profiles differ by key individual characteristics (age, sex, race, family adversity level). Participants were 854 ethnically diverse adolescents (ages 10-17) from the ADHD Teen Integrative Data Analysis Longitudinal (TIDAL) dataset who were assessed at clinical referral. Parent, adolescent, and teacher ratings, educational testing, and school records measured eight key presenting problems at intake.

RESULTS

A three-profile solution emerged. ADHD simplex (63.7%) was characterized by a mix of the ADHD-Inattentive and ADHD-Combined subtypes, moderate impairment levels, and infrequent comorbidities. ADHD + internalizing (11.4%) was characterized by higher likelihood of comorbid anxiety and/or depression. The disruptive/disorganized ADHD (24.9%) profile was characterized by severe organization, time management, and planning (OTP) problems, the ADHD-Combined subtype, and frequent disruptive behavior at school. Age did not vary across these phenotypes. More females were present in the ADHD + internalizing phenotype; males were more likely to be found in the disruptive/disorganized ADHD phenotype. Higher family adversity and African American race were associated with the disruptive/disorganized ADHD phenotype.

CONCLUSIONS

Adolescents with ADHD demonstrate varying presenting problem phenotypes that vary by sex, family adversity, and race/ethnicity. Consideration of these phenotypes may inform treatment matching and efforts to improve screening among under-diagnosed groups.

ADHD symptomatology of children with congenital heart disease 10 years after cardiac surgery: the role of age at operation

BACKGROUND

The aim of the present study was to investigate the differences in ADHD symptomatology between healthy controls and children who underwent cardiac surgery at different ages.

METHODS

Altogether, 133 children (54 patients with congenital heart disease undergoing first cardiac surgery under 3 years of age, 26 operated at the age of 3 or later, and 53 healthy controls) were examined. Patients completed the Youth Self Report (YSR), while their parents completed the Child Behaviour Checklist (CBCL) and the ADHD Rating Scale-IV.

RESULTS

Children receiving surgery for the first time under the age of 3 years were more likely diagnosed with cyanotic type malformation and have undergone to a greater number of operations. However, ADHD symptoms of those treated surgically at or above 3 years of age were more severe than that of the control group or those who were treated surgically at a younger age. The control group and those treated surgically below the age of three did not differ across any of the ADHD symptom severity indicators.

CONCLUSIONS

The age at the time of cardiac surgery might be associated with later ADHD symptom severity - with lower age at operation associated with better outcomes. Further, adequately powered studies are needed to confirm these exploratory findings and investigate the moderators of this relationship.

Organization interventions as a mediator of change in grades in the Challenging Horizons Program

This study evaluated whether an organization intervention was a mediator of change for grade point average (GPA) in a randomized clinical trial of a school-based treatment program for adolescents with attention deficit hyperactivity disorder (ADHD). A demographically diverse sample of 148 participants (105 males) with a diagnosis of ADHD were recruited from nine middle schools. Comprehensive diagnostic evaluations were completed and participants were randomized into one of three conditions (two active treatment conditions, one control condition) for a randomized clinical trial that lasted an entire school year. The results of the trial are reported elsewhere (Evans et al., 2016; Schultz et al., 2017); in this study we evaluated four of the criteria for determining mediation as reported by Kazdin (2007) to determine whether response to the organization intervention in this school-based treatment program mediated the relationship between dosage and GPA beyond previous GPA. The results provided evidence that response to the organization intervention mediated the relationship between intervention dosage and change in GPA.

Examination of developmental pathways from preschool temperament to early adolescent ADHD symptoms through initial responsiveness to reward

To identify sources of phenotypic heterogeneity in attention-deficit/hyperactivity disorder (ADHD) accounting for diversity in developmental/ pathogenic pathways, we examined, in a large sample of youth (N = 354), (a) associations between observed temperamental emotionality at age 3, an electrocortical index (i.e., reward positivity [RewP]) of initial responsiveness to reward at age 9, and ADHD symptoms at age 12, and (b) whether the association between emotionality and ADHD symptoms is mediated by initial responsiveness to reward. Bivariate analyses indicated greater positive emotionality (PE) was associated with enhanced RewP, lower age-9ADHD and lower age-12 inattention (IA). Negative emotionality (NE) was not associated with RewP or ADHD. Mediation analyses revealed the association between PE and hyperactivity/impulsivity (H/I) was mediated by RewP; enhanced RewP was associated with greater H/I. Greater PE was associated with enhanced RewP at a trend level. These effects held accounting for age-9 ADHD, age-12 IA and age-12 oppositional defiant and conduct disorder symptoms. As such, preschool emotionality is associated with adolescent ADHD-H/I symptoms through late childhood initial responsiveness to reward. These relations indicate that individual differences in emotionality and reward responsiveness may be informative for personalizing ADHD interventions.

A Phase 3, Placebo-Controlled Trial of Once-Daily Viloxazine Extended-Release Capsules in Adolescents With Attention-Deficit/Hyperactivity Disorder

PURPOSE

This phase 3 clinical trial evaluated the efficacy and safety of viloxazine extended-release capsules (VLX-ER) as a monotherapy for attention-deficit/hyperactivity disorder (ADHD) in adolescents (12-17 years).

METHODS

Eligible subjects (n = 310) were randomized to receive once-daily 200 and 400 mg VLX-ER, or placebo for 6 weeks. The primary efficacy end point was change from baseline (CFB) at the end of study (EOS) in ADHD Rating Scale-5 Total score. Key secondary end points were Clinical Global Impression-Improvement score at EOS, CFB at EOS in Conners 3-Parent Short Form Composite T-score, and CFB at EOS in Weiss Functional Impairment Rating Scale-Parent Total average score.

RESULTS

In the 200-mg/d and 400-mg/d VLX-ER treatment groups, a significant improvement was found in the CFB at EOS in ADHD Rating Scale-5 Total (P = 0.0232, P = 0.0091) and Inattention (P = 0.0424, P = 0.0390) and Hyperactivity/Impulsivity (P = 0.0069, P = 0.0005) subscale scores versus placebo. The Clinical Global Impression-Improvement score was significantly improved at EOS in the 200-mg/d and 400-mg/d VLX-ER groups versus placebo (P = 0.0042, P = 0.0003). The Conners 3-Parent Short Form composite T-score and Weiss Functional Impairment Rating Scale-Parent Total average score exhibited improvement in both VLX-ER groups; however, the difference versus placebo was not statistically significant. The most common treatment-related adverse events were somnolence, headache, decreased appetite, nausea, and fatigue. The adverse event-related discontinuation rates were <5% in all groups.

CONCLUSIONS

Viloxazine extended-release demonstrated statistically significant and clinically meaningful improvement in ADHD symptoms in adolescents and was generally well tolerated.

The Mechanism, Clinical Efficacy, Safety, and Dosage Regimen of Atomoxetine for ADHD Therapy in Children: A Narrative Review

Atomoxetine, a selective norepinephrine (NE) reuptake inhibitor, was approved for attention deficit/hyperactivity disorder (ADHD) treatment in children, adolescents and adults. We searched the database PubMed/MEDLINE (2000 to October 1, 2021). Only publications in English were considered. Atomoxetine inhibits the presynaptic norepinephrine transporter (NET), preventing the reuptake of NE throughout the brain along with inhibiting the reuptake of dopamine in specific brain regions such as the prefrontal cortex (PFC). The novel mechanism of atomoxetine also includes several new brain imaging studies and animal model studies. It is mainly metabolized by the highly polymorphic drug metabolizing enzyme cytochrome P450 2D6 (CYP2D6). Atomoxetine is effective and generally well tolerated. ADHD is often accompanied by multiple comorbidities. A series of studies have been published suggesting that atomoxetine is effective in the treatment of ADHD symptoms for children with various types of comorbidity. In some cases, it is possible that atomoxetine may have a positive influence on the symptoms of comorbidities. Atomoxetine can be administered either as a single daily dose or split into two evenly divided doses, and has a negligible risk of abuse or misuse. The latest guideline updated that clinical dose selection of atomoxetine was recommended based on both CYP2D6 genotype and the peak concentration. To have a more comprehensive understanding of atomoxetine, this review sets the focus on the mechanism, clinical efficacy and dosage regimen in detail, and also touches on those studies regarding adverse reactions of atomoxetine.

The Effect of Vitamin D3 Supplementation on Serum BDNF, Dopamine, and Serotonin in Children with Attention-Deficit/Hyperactivity Disorder

BACKGROUND & OBJECTIVE

Attention-Deficit/Hyperactivity Disorder (ADHD) is one of the most common psychiatric disorders in childhood. The exact etiology of this disease is unknown, but it is believed to be related to the disorder of catecholaminergic and serotonergic systems. Also, serum vitamin D levels in patients with ADHD is lower. Several studies have also shown the effect of vitamin D on the synthesis pathways of dopamine, serotonin, and a number of neurotrophic factors. Therefore, this study aimed to investigate the effect of vitamin D3 supplementation on serum levels of Brain-Derived Neurotrophic Factor (BDNF), dopamine, and serotonin in school-aged children with ADHD.

METHODS

Eighty-six children with ADHD were divided into two groups, based on randomized permuted blocks. Patients received 2000 IU vitamin D/day or a placebo for 12 weeks. Serum levels of BDNF, dopamine, serotonin, and 25-hydroxyvitamin D [25(OH)D] were measured at baseline and at the end of the study.

RESULTS

Serum levels of 25(OH)D and dopamine significantly increased in the vitamin D group, compared to the placebo group (p < 0.05). However, serum BDNF and serotonin levels did not change significantly.

CONCLUSION

Vitamin D3 supplementation in children with ADHD can increase serum dopamine levels, but further studies are needed to determine the effects of vitamin D on neurotrophic factors and serotonin.

Comorbidity and Factors Affecting Treatment Non-Persistence in ADHD

Objective: The aim of the study was to identify factors for treatment non-persistence in patients with ADHD. Method: Data for 100 patients with ADHD aged 5 to 16 who completed the Kiddie-Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version-Korean Version (K-SADS-PL-K) and Korean Wechsler Intelligence Scale for Children (K-WISC) were obtained between 2008 and 2013. Patients were classified as treatment-persistent and treatment-non-persistent based on 6-month follow-up. Sociodemographic data, comorbidities, intelligence quotient (IQ), severity, and social/school functioning were compared. Results: Adolescence and poor parental spousal relationships significantly predicted treatment non-persistence. Although comorbid major depressive disorder and absence of transient tic disorder were associated with treatment non-persistence, there was no difference in overall psychiatric comorbidity. No differences existed for IQ, Clinical Global Impressions-Severity (CGI-S) score, peer relationships, and academic achievement. Conclusion: Lower treatment persistence was associated with adolescence, comorbid depression, absence of tics, and poor parental spousal relationships, but not with symptom severity or impairment of the disorder.

Neurochemical Correlates of Executive Function in Children with Attention-Deficit/Hyperactivity Disorder

OBJECTIVES

Attention-Deficit/Hyperactivity Disorder (ADHD) is a prevalent neurodevelopmental disorder with no known biomarkers. The objectives of this study were 1) to investigate spectroscopic biomarkers in the right prefrontal cortex (R-PFC) and left striatum; 2) to evaluate Executive Function (EF) performance; and, 3) to examine the clinical relevance of glutamate in EF tasks.

METHODS

A total of 21 children with ADHD (M = 10.41 years, SD = 1.41) and 15 controls without ADHD (M = 9.90 years, SD = 1.54 years) were enrolled. Short echo proton magnetic resonance spectroscopy (1H-MRS; TE = 30ms) was used to study the changes in the R-PFC and left striatum. Both groups completed an EF assessment battery, including working memory, inhibition, cognitive flexibility and verbal fluency tasks.

RESULTS

In the R-PFC, independent t-tests found decreased concentration of glutamate (p = 0.009), NAA (p = 0.029) and choline (p = 0.016) in ADHD participants compared to controls. No significant differences were seen in the left striatum. Multivariate analysis of variance did not indicate overall EF challenges in the ADHD sample (p < .05). Positive correlations with glutamate concentration and EF performance in the control group were observed, however, no such correlations were reported in the ADHD group.

CONCLUSIONS

The results indicated a subgroup of children with ADHD who presented with hypo-glutamatergic signalling in the R-PFC. Additionally, findings suggested a decoupling effect of glutamate in EF related tasks in children with ADHD compared to controls. Thus, glutamate concentration may be a possible ADHD biomarker and novel treatments target.

Implementing Parent-Teen Motivational Interviewing + Behavior Therapy for ADHD in Community Mental Health

Despite the promise of psychosocial interventions for adolescent Attention Deficit Hyperactivity Disorder (ADHD), there are no studies that examine their implementation in community mental health contexts. In this study, we evaluate the implementation of community-based Supporting Teens' Autonomy Daily (STAND), a parent-teen Motivational Interviewing + Behavior Therapy intervention for adolescents with ADHD. Adolescents with ADHD (N = 225), who were clients at four community mental health agencies, received treatment from 82 therapists. There was double randomization of adolescents and therapists to STAND or Usual Care (UC). Nearly all therapists randomized to STAND completed the training and regularly attended supervision, rating STAND as acceptable and lower burden than UC practices. In the STAND group, MI competence and implementation were lower than in university trials (benchmark range, 19.5% for reflection to question ratio to 83.1% for technical globals). MI integrity in the STAND group was significantly higher than UC across most MITI indices. Content fidelity was adequate in STAND's engagement and skills phases (76.4-85.0%), but not its planning phase (24.4%). Therapists commonly neglected weekly review of goals and home practice and deviated from manualized pace and sequencing of therapy tasks. Learning MI was more challenging for bilingual therapists and therapists with more years of experience. STAND was delivered with higher integrity in earlier sessions and office-based sessions. Discussion identifies future directions for exporting adolescent ADHD interventions to community settings. Patient outcome data for this trial is presented elsewhere. Trial Registration: NCT02694939 www.clinicaltrials.gov .

Attention-deficit/hyperactivity disorder: diagnostic criteria, epidemiology, risk factors and evaluation in youth

Attention-deficit/hyperactivity disorder (ADHD) is the most common neurodevelopmental disorder in childhood with persistence into adulthood. It has a multifactorial etiology. Its chronicity, if diagnosis is missed or delayed, will result in significant negative impact on the individual's overall functioning and development. With the revised diagnostic criteria released in 2013 by the American Psychiatric Association, established standards of clinical practice continue to be applicable and valuable in the diagnosis and management of ADHD. In older children and adolescents, it is important to differentiate what is developmentally appropriate from problematic as ADHD has high correlation with poor outcomes, comorbidities, and low quality of life.

Developmental effects of environmental enrichment on selective and auditory sustained attention

Environmental enrichment (EE) has been used as a positive manipulation in different disease models. However, there is conflicting evidence reported in the literature about the effects of EE. Additionally, the time period that would be most beneficial in implementing environmental enrichment as an intervention is not clear. Our study aimed to systematically compare the prenatal, juvenile, mid-adolescence, and adulthood developmental trajectory to further the understanding of enriched environment's effects on selective and auditory sustained attention, corresponding to behavioral (conceived) and physiological-reflexive (non-conceived) measures. Rats were exposed for 21 days to enriched environment during various developmental periods and compared to age-matched controls. All groups were tested for long-term effects (at postnatal day 120 and onward) on selective and sustained attention. We found that the exposure to enriched environment during mid-adolescence has yielded the most significant and long-term pattern of effects, including selective and auditory sustained attention performance, increased foraging-like behavior and a significant decrease in corticosterone level. Similarly, the exposure to EE at juvenile period improved selective attention, increased foraging-like behavior, and reduced anxiety levels as reflected in the open field as well as in low corticosterone levels. These results specify a crucial period along the developmental trajectory for applying environmental enrichment. Mid-adolescence is suggested, in future basic and translational studies, as the sensitive time period that induces the most beneficial and long-term effects of EE on attention. The current findings suggest that the exposure to EE during mid-adolescence should be further considered and studied as behavioral alternative intervention, or as adjuvant behavioral therapy, aimed to decrease the probability to develop ADHD in post-adolescence period. This suggestion is highly relevant due to the debate regarding the pros and cons of screens usage (e.g. Facebook, online games, etc.) during early life that decreases environmental enrichment, especially, direct social interaction.

Chronic Care for Attention-Deficit/Hyperactivity Disorder: Clinical Management from Childhood Through Adolescence

OBJECTIVE

Impairments generally persist when children diagnosed with attention-deficit/hyperactivity disorder (ADHD) mature into adolescence. To examine changes in ADHD care during the transition from childhood to adolescence, we conducted a retrospective, longitudinal cohort study of patients diagnosed with ADHD before the age of 10 years to assess changes from preadolescence through adolescence in (1) frequency by which primary care providers offer ADHD care to patients, (2) range of concerns assessed during patient encounters, and (3) treatments implemented or recommended.

METHODS

We identified patients from 3 practices included in a large primary care network who (1) were born between 1996 and 1997, (2) were diagnosed with ADHD before the age of 10 years, and (3) received primary care continuously from age 9 through late adolescence. Clinical care was compared among patients in preadolescence (age 9-11), early adolescence (age 12-14), and late adolescence (age 15-18).

RESULTS

Children diagnosed with ADHD before the age of 10 years were less likely to have a documented visit for ADHD during late adolescence (41% of patients) compared with preadolescence (63%, p < 0.001). Evidence of monitoring for depression, suicide, and substance abuse increased from preadolescence to adolescence (p < 0.001) and occurred in about 90% of adolescent patients. However, monitoring for risky sexual activity occurred in only about 50% of adolescents. Discussions of medication diversion and driver readiness were essentially not documented.

CONCLUSION

The findings raise concerns about how primary care providers manage adolescents with a history of ADHD. Improving monitoring of risky sexual behavior and driver readiness and providing patient education about medication diversion are needed.

Disparities in healthcare transition support received by adolescents with special healthcare needs

BACKGROUND

Transitioning to adult healthcare systems can be challenging, especially if left unaddressed for adolescents with special healthcare needs (ASHCN), such as those with autism spectrum disorder and attention-deficit/ hyperactivity disorder. While there is evidence of disparities between different demographics regarding general healthcare services, research on healthcare-specific transition planning is lacking. Thus, there is a critical need to continually investigate these disparities.

METHOD

Using nationally representative data from the 2016 National Survey for Children's Health, several analyses were conducted to examine doctor-patient interactions and discussions about transitioning to adult health care. Accounting for demographic and diagnostic indicators allowed for the assessment of disparities.

RESULTS

Findings revealed significant disparities between age, disability and race relative to various healthcare transition support services.

CONCLUSIONS

Findings provide valuable information that can inform the development of training programmes for healthcare providers, influence policy, modify procedures and interventions and highlight the need for increased advocacy for ASHCN.

Clinical Practice Guideline for the Diagnosis, Evaluation, and Treatment of Attention-Deficit/Hyperactivity Disorder in Children and Adolescents

Attention-deficit/hyperactivity disorder (ADHD) is 1 of the most common neurobehavioral disorders of childhood and can profoundly affect children's academic achievement, well-being, and social interactions. The American Academy of Pediatrics first published clinical recommendations for evaluation and diagnosis of pediatric ADHD in 2000; recommendations for treatment followed in 2001. The guidelines were revised in 2011 and published with an accompanying process of care algorithm (PoCA) providing discrete and manageable steps by which clinicians could fulfill the clinical guideline's recommendations. Since the release of the 2011 guideline, the Diagnostic and Statistical Manual of Mental Disorders has been revised to the fifth edition, and new ADHD-related research has been published. These publications do not support dramatic changes to the previous recommendations. Therefore, only incremental updates have been made in this guideline revision, including the addition of a key action statement related to diagnosis and treatment of comorbid conditions in children and adolescents with ADHD. The accompanying process of care algorithm has also been updated to assist in implementing the guideline recommendations. Throughout the process of revising the guideline and algorithm, numerous systemic barriers were identified that restrict and/or hamper pediatric clinicians' ability to adopt their recommendations. Therefore, the subcommittee created a companion article (available in the Supplemental Information) on systemic barriers to the care of children and adolescents with ADHD, which identifies the major systemic-level barriers and presents recommendations to address those barriers; in this article, we support the recommendations of the clinical practice guideline and accompanying process of care algorithm.

Illness representations among adolescents with attention deficit hyperactivity disorder: associations with quality of life, coping, and treatment adherence

Research into the causes and outcomes of attention deficit hyperactivity disorder (ADHD) has been extensive, yet little is known about the perception of ADHD as a disorder and its related outcomes among diagnosed youth. The present study applied the Common-Sense Model of Illness Representations (CSM) to examine the perception of ADHD and its association with quality of life (QoL), coping strategies, and treatment adherence among 63 diagnosed adolescents (10-18 years). Adolescents recruited from clinics, parent support groups, and an educational service completed self-report measures of the key constructs. Results indicated that adolescents generally perceive their ADHD as mildly threatening; four illness beliefs (perceived impact, personal control, timeline, and coherence) are significant predictors of coping and four (perceived impact, causes, personal control, and treatment control) are that of QoL. Adolescents who perceived minimal impact, expected longer duration, had strong sense of coherence, and believed in personal control of ADHD coped with the disorder more actively. Those who made weaker attribution to psychological and environmental causes, believed in personal control and the effectiveness of behavioral treatment enjoyed better QoL. In addition, female adolescents seem to experience more difficulties in the management of ADHD than male counterparts. These findings have potentially important clinical implications, suggesting that perceptions of ADHD related to the disorder's impact, duration, coherence, and personal control, may be important for clinicians to address when caring for adolescents with the disorder.

A systematic review of mindfulness based interventions for children and young people with ADHD and their parents

Objective

Attention deficit hyperactivity disorder (ADHD) is one of the most prevalent disorders in childhood, which may pose risks in later life such as academic underachievement and anti-social behaviour. It has been suggested that mindfulness-based interventions (MBI) may contribute to positive outcomes with child and adult populations. In this article, we aim to systematically review the literature regarding the effectiveness of MBI on both children with ADHD and their parents.

Method

Seven databases were searched using the PRISMA criteria and included peer-reviewed journals and grey literature.

Results

Ten studies met the inclusion criteria. Findings suggested that MBI had positive results in addressing attention deficits in children with ADHD, but in terms of hyperactivity, the evidence was conflicting. MBI interventions also appear to effectively address parental stress and family functioning. However, the rating from the quality assessment showed several methodological limitations.

Discussion

The current evidence on the impact of MBI on ADHD symptoms is non-conclusive. However, promising data indicated the potential for MBI in addressing parental stress and family functioning. Further research is recommended to overcome the current methodological limitations.

Review: Experiences of healthcare transitions for young people with attention deficit hyperactivity disorder: a systematic review of qualitative research

BACKGROUND

Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterised by hyperactivity, inattention and impulsivity. Up to two thirds of young people with ADHD may experience symptoms into adulthood, yet the limited literature available suggests that many young people with ongoing needs do not transfer from child to adult healthcare services. Although worldwide and NICE guidelines recognise the importance of supported transition, evidence suggests for ADHD that this is poorly managed and variable. Little is known about how transition is experienced by those involved. We aimed to synthesise existing peer-reviewed literature to understand views and experiences of young people, carers and clinicians on transitioning between child and adult ADHD services.

METHOD

Five databases were searched and all articles published between 2000 and up until January 2017 considered. Four key search areas were targeted; ADHD, Transition, Age and Qualitative Research. Quality appraisal was conducted using Wallace criteria. Findings from included studies were synthesised using thematic analysis.

RESULTS

Eight papers, six from the UK and one each from Hong Kong and Italy, were included. Emerging themes centred on difficulties transitioning; hurdles that had to be negotiated, limitations of adult mental health services, inadequate care and the impact of transition difficulties.

CONCLUSIONS

Healthcare transition for this group is difficult in the United Kingdom because of multiple challenges in service provision. In addition to recommendations in NICE guidelines, respondents identified a need for better provision of information to young people about adult services and what to expect, greater flexibility around age boundaries and the value of support from specialist adult ADHD services. More research is needed into ADHD healthcare transition experiences, especially in countries outside the United Kingdom, including accounts from carers and clinicians.

Perceptions of ADHD Among Diagnosed Children and Their Parents: A Systematic Review Using the Common-Sense Model of Illness Representations

Research on children and parents' experiences of ADHD has grown in recent years, attracting attention to their subjective perception of ADHD as a disorder. Theoretical accounts of illness perception suggest that it is multi-dimensional, consisting of at least five core constructs (see the common-sense model of illness representations or CSM: Leventhal et al., in: Rachman (ed) Medical psychology, Pergamon, New York, vol 2, pp 7-30, 1980, in: Baum, Taylor, Singer (eds) Handbook of psychology and health: social psychological aspects of health, Earlbaum, Hillsdale, vol 4, pp 219-252, 1984). We suggest that the application of CSM in children/adolescents with ADHD and their parents may play an important role in understanding their coping behavior, treatment adherence, and emotional well-being. A systematic search identified 101 eligible studies that investigated the perception of ADHD among diagnosed children/adolescents and their parents. In general, these studies support the existence of the multiple facets of illness representations proposed by the CSM in both diagnosed youngsters and parents indicating substantial variability among both parents and youngsters on each of these facets. The comprehensive assessment of the representations of ADHD indicates imbalance attention to the different representations of ADHD in the literature; disproportional research attention has been paid to the perceived effectiveness of treatment (i.e., treatment control dimension) compared to other illness representations (e.g., timeline, consequence, and coherence), despite research showing their relevance to treatment adherence among other implications. The review identifies the limitation of existing relevant research, needed foci for future studies, specific testable hypotheses, and potential clinical implications of the multifaceted representations of ADHD among youngsters and carers alike.

Attention-deficit/hyperactivity disorder: An integrated developmental psychopathology and Research Domain Criteria (RDoC) approach

Attention-deficit/hyperactivity disorder (ADHD) is characterized by heterogeneous behaviors and symptoms, developmental trajectories, and treatment response. Isolating intermediate phenotypes that are superior to current DSM-based nosology in order to explain such heterogeneity is integral to enhancing etiological theory, improving clinical assessment, predicting treatment response, and developing tailored treatments. To this end, this review provides an integrated developmental psychopathology and National Institute of Mental Health Research Domain Criteria (RDoC) approach to ADHD. In particular, associations between ADHD and RDoC domains of cognition (specifically working memory) and positive valence (reward anticipation/delay/receipt) are discussed. These domains are examined across behavioral and neurocircuitry levels of analysis and placed within a developmental context via examining associations among RDoC domains, relevant features of ADHD, and environmental correlates implicated across development. Limitations of the existing literature and proposed future directions are explored. Importantly, future work should focus on novel approaches that account for developmental shifts in functioning of relevant RDoC domains over time, as well as further examination of the interaction across RDoC domains and levels of analysis.

Evidence for the reliability and preliminary validity of the Adult ADHD Self-Report Scale v1.1 (ASRS v1.1) Screener in an adolescent community sample

OBJECTIVES

There is a need for brief and publicly-available assessments of attention deficit hyperactivity disorder (ADHD) easily administered in large-scale survey efforts monitoring symptoms among adolescents. The ADHD Self-Report Scale v1.1 (ASRS; Kessler et al., 2005) Screener, a six-item measure of ADHD symptoms, is a valid and reliable screening instrument for ADHD among adults. The current study provides initial evidence for the reliability and validity of the ASRS Screener among a community sample of U.S. adolescents.

METHODS

Middle and high school students in grades 6 through 12 (N = 2,472) completed the ASRS Screener, along with the Strengths and Difficulties Questionnaire (SDQ; Goodman, 2001) and several questions about school functioning.

RESULTS

The ASRS Screener demonstrated good internal consistency, with items captured by a single underlying latent variable, which was invariant across subsamples differing by gender. The ASRS Screener scores were associated with the SDQ subscale measuring hyperactivity/inattention (r = 0.58) and significantly less strongly associated with other SDQ subscale scores (r = -0.15-0.41). The ASRS Screener scores were also significantly associated with student-reported school functioning.

CONCLUSION

Findings suggest directions for future research and provide preliminary support for use of the ASRS Screener as a brief tool for identifying symptoms of ADHD among adolescents.

Remittance or persistence of attention deficit-hyperactivity disorder (ADHD) and its impact on recidivism in risky driving behaviors

OBJECTIVE

Recent data regarding the persistence or remittance of attention deficit-hyperactivity disorder (ADHD) diagnosis into adulthood raise the question of its possible role in crucial public health issues, including road safety, especially when neurocognitive capacities are challenged.

METHODS

The study included 611 participants with serious traffic violations. The Spanish version of the Mini International Neuropsychiatric Interview (M.I.N.I.) was used to assess psychopathology. They were grouped into 3 diagnostic conditions: non-ADHD, persistent ADHD (ADHD-P), and remittent ADHD (ADHD-R). Several risky driving behaviors were analyzed.

RESULTS

Although participants with ADHD have more driving violations relative to non-ADHD, ADHD-R, and ADHD-P drivers have similar profiles. ADHD-R and ADHD-P drivers are more prone to perform risky and recidivistic behaviors relative to non-ADHD counterparts (P = .044 and P = .047, respectively); ADHD-R and ADHD-P participants are statistically comparable in this proneness (P = .772).

CONCLUSION

These results suggest that the underlying core deficits of ADHD-attention and other executive disabilities-persist despite the fact that some people no longer reach the threshold for clinical diagnosis.

Comparing Alliance in Two Cognitive-Behavioural Therapies for Adolescents With ADHD Using a Randomized Controlled Trial

Alliance is defined as the client-therapist bond and their ability to collaborate on therapeutic activities. Treatment for adolescents with ADHD is rarely studied in terms of alliance. In this study, two cognitive-behavioral treatments (CBT; one structured treatment aimed at planning skills and one less-structured solution-focused treatment, both delivered in the style of Motivational Interviewing) were compared with regard to alliance and alliance-outcome association. The influence of therapist competence on this alliance-outcome association was also evaluated. The alliance between 69 adolescents diagnosed with ADHD and their therapists was measured early in treatment, using the Therapy Process Observational Coding System for Child Psychotherapy-Alliance scale. Observer-rated therapist competence was measured using the Motivational Interviewing Treatment Integrity scale (version 3.1.1.). Outcome variables were the adolescents' reduction in planning problems and ADHD symptoms. The alliance, and, more specifically, collaboration on therapeutic activities, was significantly higher for the more structured CBT (p = .04; moderate effect size). Alliance was not related to outcome in the more structured CBT, while the alliance was positively related to the reduction in planning problems in the less structured CBT. Finally, alliance was a significant mediator between therapist competence and treatment outcome for the less-structured CBT. The clarity and structure of CBT may help facilitate alliance formation for adolescents with ADHD who often have difficulty implementing structure themselves. Therapists may need to invest more in alliance formation in less structured CBT as the alliance affects outcome. Moreover, enhancing therapist competence in less structured CBT may help improve outcomes in less structured CBT, as therapist competence may impact outcome through alliance.

Pharmacogenetics predictors of methylphenidate efficacy in childhood ADHD

Stimulant medication has long been effective in treating attention-deficit/hyperactivity disorder (ADHD) and is currently the first-line pharmacological treatment for children. Both methylphenidate and amphetamine modulate extracellular catecholamine levels through interaction with dopaminergic, adrenergic and serotonergic system components; it is therefore likely that catecholaminergic molecular components influence the effects of ADHD treatment. Using meta-analysis, we sought to identify predictors of pharmacotherapy to further the clinical implementation of personalized medicine. We identified 36 studies (3647 children) linking the effectiveness of methylphenidate treatment with DNA variants. Pooled-data revealed a statistically significant association between single nucleotide polymorphisms (SNPs) rs1800544 ADRA2A (odds ratio: 1.69; confidence interval: 1.12-2.55), rs4680 COMT (odds ratio (OR): 1.40; confidence interval: 1.04-1.87), rs5569 SLC6A2 (odds ratio: 1.73; confidence interval: 1.26-2.37) and rs28386840 SLC6A2 (odds ratio: 2.93; confidence interval: 1.76-4.90), and, repeat variants variable number tandem repeat (VNTR) 4 DRD4 (odds ratio: 1.66; confidence interval: 1.16-2.37) and VNTR 10 SLC6A3 (odds ratio: 0.74; confidence interval: 0.60-0.90), whereas the following variants were not statistically significant: rs1947274 LPHN3 (odds ratio: 0.95; confidence interval: 0.71-1.26), rs5661665 LPHN3 (odds ratio: 1.07; confidence interval: 0.84-1.37) and VNTR 7 DRD4 (odds ratio: 0.68; confidence interval: 0.47-1.00). Funnel plot asymmetry among SLC6A3 studies was identified and attributed largely to small study effects. Egger's regression test and Duval and Tweedie's 'trim and fill' were used to examine and correct for publication bias. These findings have major implications for advancing our therapeutic approach to childhood ADHD treatment.

Sex-specific trajectories of ADHD symptoms from adolescence to young adulthood

Reports of current ADHD symptoms in adults with a childhood diagnosis of ADHD are often discrepant: While one subgroup reports a particularly high level of current ADHD symptoms, another reports-in contrast-a very low level. The reasons for this difference remain unclear. Although sex might play a moderating role, it has not yet been examined in this regard. In an epidemiological cohort study from birth to young adulthood, childhood ADHD diagnoses were assessed at the ages of 4.5, 8, and 11 years based on parent ratings. Sex-specific development of ADHD symptoms was analyzed from the age of 15 to 25 years via self-reported ADHD symptoms in participants with (n = 47) and without childhood ADHD (n = 289) using a random coefficient regression model. The congruence between parent reports and adolescents' self-ratings was examined, and the role of childhood ADHD diagnosis, childhood OCC/CD, and childhood internalizing disorder as possible sex-specific predictors of self-reported ADHD symptoms at age 25 years was investigated. With regard to self-reported ADHD symptoms, females with a childhood ADHD diagnosis reported significantly more ADHD symptoms compared to females without childhood ADHD and males with and without ADHD throughout adolescence and young adulthood. In contrast, males with childhood ADHD did not differ from control males either at age 15 or at age 25 years. Only in females did a childhood diagnosis of an externalizing disorder (ADHD and CD/ODD) predict self-reported ADHD symptoms by age 25 years. Our findings suggest that self-reports of young adults with a childhood diagnosis of ADHD are influenced by sex. Specifically, females with childhood ADHD report increased levels of ADHD symptoms upon reaching adulthood. To correctly evaluate symptoms and impairment in this subgroup, other, more objective, sources of information may be advisable, such as neurophysiological measures.

Transitioning from child and adolescent mental health services with attention-deficit hyperactivity disorder in Ireland: Case note review

In a context of international concern about early adult mental health service provision, this study identifies characteristics and service outcomes of young people with attention-deficit hyperactivity disorder (ADHD) reaching the child and adolescent mental health service (CAMHS) transition boundary (TB) in Ireland. The iTRACK study invited all 60 CAMHS teams in Ireland to participate; 8 teams retrospectively identified clinical case files for 62 eligible young people reaching the CAMHS TB in all 4 Health Service Executive Regions. A secondary case note analysis identified characteristics, co-morbidities, referral and service outcomes for iTRACK cases with ADHD (n = 20). Two-thirds of young people with ADHD were on psychotropic medication and half had mental health co-morbidities, yet none was directly transferred to public adult mental health services (AMHS) at the TB. Nearly half were retained in CAMHS, for an average of over a year; most either disengaged from services (40%) and/or actively refused transfer to AMHS (35%) at or after the TB. There was a perception by CAMHS clinicians that adult services did not accept ADHD cases or lacked relevant service/expertise. Despite high rates of medication use and co-morbid mental health difficulties, there appears to be a complete absence of referral to publicly available AMHS for ADHD youth transitioning from CAMHS in Ireland. More understanding of obstacles and optimum service configuration is essential to ensure that care is both available and accessible to young people with ADHD.

Development and Open Trial of a Depression Preventive Intervention for Adolescents With Attention-Deficit/Hyperactivity Disorder

Adolescents with attention-deficit/hyperactivity disorder (ADHD) are at elevated risk for experiencing unipolar depressive symptoms and disorders. The current study describes the development of a behaviorally oriented depression preventive intervention tailored for adolescents with ADHD targeting variables empirically shown to mediate ADHD and depression (i.e., reward responsivity, emotion regulation, and family support). Eight adolescents with a history of ADHD and currently elevated depressive symptoms and their parents participated in an open trial of the Behaviorally Enhancing Adolescents' Mood (BEAM) program. Adolescents and their parents reported high satisfaction with BEAM. Staff reported BEAM was easy to implement with high adherence. Following BEAM, there were significant reductions in parent-report of adolescents' depressive symptoms and emotion regulation at posttreatment and the 6-week follow-up and adolescent-report of reward responsivity at posttreatment. Case vignettes are also provided to illustrate implementation of the BEAM program. In spite of the small sample, lack of a control group, and some discrepancies across informants, results overall support the feasibility and acceptability of the BEAM program, and suggest it has promise in reducing depressive symptoms in adolescents with ADHD.

Longitudinal Evaluation of the Cognitive-Behavioral Model of ADHD in a Sample of College Students With ADHD

OBJECTIVE

The primary aim of this study was to evaluate longitudinal pathways to impairment as outlined in the cognitive-behavioral model of ADHD in a sample of 59 college students diagnosed with ADHD.

METHOD

Serial mediation models were used to test whether underachievement, defined as prior year GPA, would longitudinally predict self-reported impairment at the end of the next school year, through negative self-concept and associated changes in symptoms of anxiety and depression, while controlling for baseline impairment and changes in ADHD symptoms.

RESULTS

Findings supported the cognitive-behavioral model of ADHD. The association between prior year GPA and overall impairment at the end of the year was fully mediated through self-concept and symptoms of depression.

CONCLUSION

These results help explain why impairment often persists even when ADHD symptoms remit and suggests that internalizing symptoms may be an important target for intervention in college students with ADHD.

The Impact of DSM-5 A-Criteria Changes on Parent Ratings of ADHD in Adolescents

OBJECTIVE

Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-5) A-criteria for ADHD were expanded to include new descriptors referencing adolescent and adult symptom manifestations. This study examines the effect of these changes on symptom endorsement in a sample of adolescents with ADHD (N = 259; age range = 10.72-16.70).

METHOD

Parent ratings were collected and Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev.; DSM-IV-TR) and DSM-5 endorsement of ADHD symptoms were compared.

RESULTS

Under the DSM-5, there were significant increases in reported inattention, but not hyperactivity/impulsivity (H/I) symptoms, with specific elevations for certain symptoms. The average adolescent met criteria for less than one additional symptom under the DSM-5, but the correlation between ADHD symptoms and impairment was attenuated when using the DSM-5 items. Impulsivity items appeared to represent adolescent deficits better than hyperactivity items. Results were not moderated by demographic factors.

CONCLUSION

In a sample of adolescents with well-diagnosed DSM-IV-TR ADHD, developmental symptom descriptors led parents to endorse slightly more symptoms of inattention, but this elevation is unlikely to be clinically meaningful.

Planning Skills of Adolescents With ADHD

OBJECTIVE

This study assesses planning skills of adolescents with ADHD using a multi-method assessment and explores subtype differences between inattentive and combined subtypes.

METHOD

One hundred fifteen adolescents with ADHD and 34 typically developing controls completed subtests of the Delis-Kaplan Executive Function System (D-KEFS), Behavioral Assessment of the Dysexecutive Syndrome (BADS), and Behavior Rating Inventory of Executive Function (BRIEF).

RESULTS

No group differences were found on the D-KEFS. The BADS Zoo Map test showed longer completion times in the inattentive than in the combined subtype and controls. The BRIEF showed more planning problems in adolescents with ADHD (both subtypes) than in controls, with the combined subtype showing most problems on overall executive functioning.

CONCLUSION

Only a proportion of adolescents with ADHD shows planning deficits. To capture these planning problems in adolescents with ADHD, it seems important to use multiple measures of planning, both ratings and "less structured" neurocognitive measures of planning.

Screening for ADHD in a Sample of Egyptian Adolescent School Students

OBJECTIVE

To screen for ADHD in a sample of Egyptian adolescent students, and study the distribution of different subtypes of ADHD, associated comorbidities, and sociodemographic correlates.

METHOD

A total of 925 adolescents were randomly selected and screened by the Conners-Wells' Adolescent Self-Report Scale-Short form (CASS:S), and potential cases were further assessed by the Kiddie Schedule for Affective Disorders and Schizophrenia-Present and Lifetime versions (K-SADS-PL).

RESULTS

A total of 87 students (9.4%) had potential ADHD diagnosis with evident preponderance in boys (13.8%, n = 58) than in girls (5.8%, n = 29) with a ratio of 2:1 ( p = .000, χ² = 17.328). The hyperactive-impulsive subtype comprised the majority of cases (54.7%, n = 41). Psychiatric comorbidity was invariably present (85.1%, n = 74). Nearly half the cases had poor academic achievement (43.7%, n = 34). Positive correlates included family history of psychiatric disorders, the order of birth, and parental disharmony.

CONCLUSION

ADHD is prevalent in Egyptian adolescents and is associated with high psychiatric comorbidity and a pronounced effect on academic performance.

Emotion Dysregulation Is Associated With Social Impairment Among Young Adolescents With ADHD

OBJECTIVE

The purpose of this study was to evaluate aspects of emotion dysregulation (ED) that characterize young adolescents with ADHD, examine the effects of subtype and comorbidity, and determine the extent to which ED is related to aggression and rule-breaking and social impairment.

METHOD

We examined which aspects of ED are most relevant to ADHD in 180 young adolescents (75% boys), as well as whether ED differs across ADHD subtypes or comorbid oppositional defiant disorder (ODD) status. We also examined the association between ED and aggression, rule-breaking, and social impairment.

RESULTS

Young adolescent females and males with ADHD exhibited various manifestations of ED, including behavioral dyscontrol in the presence of strong emotions and inflexibility/slow return to emotional baseline. ED did not differ as a function of ADHD subtype or comorbid ODD. Three aspects of ED, namely, low threshold for emotional excitability/impatience, behavioral dyscontrol in the face of strong emotions, and inflexibility/slow return to baseline, predicted three of six measured indices of parent- and self-reported social impairment, above and beyond comorbid ODD.

CONCLUSIONS

ED is associated with ADHD among young adolescents, does not differ based on ADHD subtype or ODD status, and is associated with social impairment.

Psychometric Properties of the Impairment Rating Scale in Samples of Adults With Attention Deficit Hyperactivity Disorder

Adults with attention deficit hyperactivity disorder (ADHD) are impaired in numerous domains. However, psychometrically sound measures assessing broad-ranging impairment, particularly brief scales for diagnostic purposes, are scarce. The Impairment Rating Scale (IRS), originally developed to assess ADHD-related impairment in children, has been adapted to a 12-item self-report measure of impairment in adults. In this study, the psychometric properties of the adult IRS were examined in three samples. In Studies 1 and 2, the adult IRS demonstrated good convergent, divergent, and incremental validity among college students and an online sample of adults, respectively. In the same studies, an appropriate clinical cutoff score was identified (IRS item score ≥1) using diagnostic tests. In Study 3, the adult IRS demonstrated good interrater reliability between ratings provided by romantic partners. Overall, findings support the clinical utility of the adapted IRS for assessing the impairment diagnostic criterion for ADHD in adults.