ADHD research in India: A narrative review

Effect of School Closure During COVID-19 Lockdown on ADHD Symptoms Among Students

Background

Attention deficit hyperactivity disorder (ADHD) is the most common neurobehavioral disorder among children, with an estimated prevalence of 1.3 per 1000 in India. The nationwide lockdown imposed due to the COVID-19 pandemic has led to the closure of schools for an indefinite period. After the reopening of schools, the lockdown period was feared to have caused a deterioration in symptoms of existing mental health conditions among school-going children. This field study aimed to probe the association of school closures due to lockdown with any change in symptoms of ADHD in aged 6-15 years in the largest tertiary care hospital in Kolkata.

Methods

A longitudinal observational study was conducted involving 34 prediagnosed ADHD patients attending the Clinical Psychology outpatient department (OPD) of a tertiary hospital for follow-up. Data was collected by face-to-face interviews with the patients' parents using a predesigned, pretested structured study schedule. Conners' Parent Rating Scale (CPRS) was used to assess the ADHD symptoms.

Results

Twenty-three (67.65%) patients were observed to have worsened ADHD symptoms after lockdown. Significant worsening was observed in the ADHD indicator and the mood disorder indicator. Significant contributing factors were rural residence, nuclear family, non-attendance at school, and knowledge inadequacy among parents.

Conclusion

There was a significant worsening of symptoms of ADHD owing to the school closure due to the lockdown.

Comparison of brief group behavioural parent training with individual parent training for preschool children with attention deficit hyperactivity disorder: A randomized feasibility study

BACKGROUND

Behaviour parent training (BPT) is first-line treatment for preschool attention deficit hyperactivity disorder (ADHD). BPT in a group format can be a cost- and time-effective alternative in low and middle-income countries (LMIC) settings with limited resources. We conducted a randomized controlled trial to compare the feasibility and efficacy of group BPT with individual BPT in improving ADHD severity in the preschool age group over 12 weeks.

METHODS

After approval by the ethical committee, the study was conducted in the child guidance clinic, JIPMER. Fifty-six children aged 2.5 to 6 years diagnosed with ADHD according to DSM5 were recruited. Children with autism spectrum disorder and a social quotient less than 50 were excluded. Block randomization parallel design was done. Group interventions were delivered with 4-8 parents per group, focusing on psychoeducation, structuring of routine, attention enhancing tasks, behavioural parenting techniques, and TAU. ADHD severity was assessed using Conner's abbreviated behaviour rating scale at baseline, 4, 8, and 12 weeks. Parental stress was estimated by FISC-MR adapted for ADHD. Statistical analysis included repeated measures ANOVA.

RESULTS

Significant improvement was noticed for both groups (F = 20.261, p < .001, ES (η2 ) = 0.539). Group intervention was not inferior to individual BPT in reducing ADHD severity (F = 0.860, p = .468, ES (η2 ) = 0.047). There was a statistically significant difference from baseline to 12 weeks of intervention in the reduction of parental stress (F = 20.80, p < .001, ES (η2 ) = 0.278) and enhancement of the coping strategies (F = 64.4, (p < .001), ES (η2 ) = 0.78). The intervention had high attendance and fidelity rates.

CONCLUSION

Group BPT was promising in treating ADHD in low-resource settings.

Prevalence of mental disorders in South Asia: A systematic review of reviews

Mental disorders are increasing in South Asia (SA), but their epidemiological burden is under-researched. We carried out a systematic umbrella review to estimate the prevalence of mental disorders and intentional self-harm in the region. Multiple databases were searched and systematic reviews reporting the prevalence of at least one mental disorder from countries in SA were included. Review data were narratively synthesised; primary studies of common mental disorders (CMDs) among adults were identified from a selected subset of reviews and pooled. We included 124 reviews. The majority (n = 65) reported on mood disorders, followed by anxiety disorders (n = 45). High prevalence of mental disorders and intentional self-harm was found in general adult and vulnerable populations. Two reviews met our pre-defined criteria for identifying primary studies of CMDs. Meta-analysis of 25 primary studies showed a pooled prevalence of 16.0% (95% CI = 11.0-22.0%, I 2 = 99.9%) for depression, 12.0% (5.0-21.0%, I 2 = 99.9%) for anxiety, and 14.0% (10.0-19.0, I 2 = 99.9%) for both among the general adult population; pooled estimates varied by country and assessment tool used. Overall, reviews suggest high prevalence for mental disorders in SA, but evidence is limited on conditions other than CMDs.

Behavior Management Training for Parents of Children with Preschool ADHD Based on Parent-Child Interactions: A Multicenter Randomized Controlled, Follow-Up Study

Objective

There is a need to develop optimized, evidence-based parent training programs tailored for preschoolers with attention deficit hyperactivity disorder (ADHD). The objective of this study was to explore a behavioral management training program aimed at the parents of preschool children with ADHD, which directly analyzes parent-child interaction from the perspective of system theory, and the intervention effect on ADHD in preschool children.

Methods

A multicenter randomized controlled study was conducted using system-based group therapy with 62 parents of preschool children with ADHD aged four to six years. ADHD symptoms, behavioral and emotional problems, and social functioning were compared with 61 control children whose parents did not receive training by applying the ADHD Rating Scale (ADHD-RS), Strengths and Difficulties Questionnaire (SDQ), and Questionnaire-Children with Difficulties (QCD) at the time of subject entry and at two and six months of entry, respectively.

Results

The results of the ADHD-RS assessment showed that children in the intervention group had significantly lower factor scores for attention deficit, hyperactivity, and impulsivity than the children in the control group after parental training and at follow-up (P < 0.05). Total scores on the SDQ scale, as well as character problems, hyperactivity, and peer interaction scores, significantly decreased with statistically significant differences (all P < 0.05), and emotional symptoms and prosocial behavior did not notable decline (P > 0.05). Compared with the control group, the total scores of the QCD scale and the scores of each factor in the intervention group remained significantly higher at the follow-up (P < 0.05).

Conclusion

After continuous intervention for eight weeks, parents were able to help the children with preschool ADHD to improve their ADHD symptoms and emotional behavioral and social functioning significantly, and the efficacy was maintained at the four-month follow-up; the systemic-based parent training in behavior management (PTBM) is applicable to the treatment of preschool ADHD and is worth promoting.

Viloxazine for Attention-Deficit Hyperactivity Disorder: A Systematic Review and Meta-analysis of Randomized Clinical Trials

Background

Recently, the United States Food and Drug Administration (USFDA) approved viloxazine extended-release (ER) to manage attention-deficit hyperactivity disorder (ADHD) in pediatric patients of 6-17 years of age.

Objective

To perform a meta-analysis to determine the safety and efficacy of viloxazine ER in the management of ADHD.

Data Source and Methods

A literature search was performed through the databases Cochrane Library, PubMed, and clinicaltrials.gov, for a period from inception to August 2021, with the keywords: viloxazine, SPN-812, ADHD, and randomized clinical trials. The randomized controlled trials published in English language that analyzed the efficacy and safety were included. The risk of bias (RoB) was assessed by RoB tool. The outcomes included in this study were the proportion of patients with a 50% reduction in ADHD-Rating Scale-5 (ADHD-RS-5 responders) and improvement in CGI-I scale and the proportion of patients with at least one adverse event, the incidence of somnolence and Serious Adverse Events (SAEs).

Results

This meta-analysis includes 1605 patients from five randomized clinical trials; all of the trials were at low risk of bias. Viloxazine group had more ADHD-RS-5 responders as compared to placebo; RR = 1.62; 95% CI = 1.36-1.93; P = <.00001. Significantly higher number of patients showed improved CGI-I score; RR = 1.53; 95% CI = 1.32-1.78; P = <.00001. A higher proportion of patients was observed with at least one adverse event (RR = 1.52; 95% CI = 1.24-1.85; P = <.0001), and somnolence (RR = 3.93; 95% CI = 2.11-7.31; P = <.0001) in viloxazine group. The incidence of SAEs was more in viloxazine group (RR = 2.98; 95% CI = .67-13.3; P = .15).

Conclusions

Viloxazine was found to be significantly superior to placebo in both efficacy outcomes. Adverse events and somnolence were significantly more than the placebo. The incidence was SAEs was more in the viloxazine group but was not statistically significant.

Development and effectiveness of parent skills training intervention for Indian families having children with attention-deficit/hyperactivity disorder (ADHD)

OBJECTIVE

Parent skills training interventions (PSTIs) are considered first-line treatment for ADHD. We describe development and effectiveness of a culturally-contextualised PSTI for Indian families.

METHOD

Forty-one families divided into 5 groups, each group with 6-10 families received group PSTI comprising of 10 weekly sessions using multi-point videoconferencing as an adjunct to routine care in the non-randomized pre-post intervention study.

RESULTS

Thirty-six families attended more than 3 sessions. RM ANOVA revealed significant improvements in parent-rated measures of inattention (p < 0.001), hyperactivity/ impulsivity (p = 0.007), conduct problems (p = 0.002), academic performance (p = 0.001) and classroom behavior (p = 0.001). Mixed ANOVA analysis did not reveal significant differences between those who received PSTI with medication and those who received PSTI on any VADPRS domains except depression/ anxiety scores, wherein former group performed better (p = 0.008). More than 60 % parents perceived that PSTI was helpful in increasing awareness, reducing guilt/ blame, improving parent-child relation and decreasing stress. Difficulty in sustaining with the strategies was reported by 50 % of parents.

CONCLUSION

Findings suggest that PSTI is effective and helpful for Indian families dealing with ADHD.

Negotiating ADHD: Pragmatic medicalization and creolization in urban India

Although a growing number of studies have demonstrated differences in responses to ADHD-like behaviours, very few studies have focused on theorizing diversity in the way ADHD is framed and approached globally. To contribute to the study of medicalization in a global context, this study examines the discursive field in which care professionals explain and treat ADHD among children in metropolitan India and addresses the need for an analytic framework to grasp the variations in the way ADHD is understood and approached. Building on the concepts of pragmatic medicalization and creolization, we study ADHD discourses in India asking 'What is at stake' and 'What matters most'? In this mixed methods study, 64 care professionals regularly involved in assessing ADHD-like behaviour completed an online Q-sort, and 21 professionals participated in face-to-face interviews. The Q-data were subjected to factor analysis. The interviews were analyzed using qualitative content analyses. Our study identified six distinct ADHD discourses, which showed that care professionals combine explanatory and treatment models. Professionals adapt their explanations and treatments of ADHD to parents' worries regarding academic performance, family prestige, stigma and side effects of allopathic medicine. Our findings indicate that an awareness of local concerns and adjustments to structural opportunities can diversify how ADHD-like behaviour is framed and responded to. This study demonstrates that medicalization operates between the emerging institutions of care and the everyday concerns of families and care professionals and reveals the need to examine conflicting stakes as drivers of diverse responses to ADHD diagnosis and treatment in India and the rest of the world.

Screen Time Exposure in Preschool Children with ADHD: A Cross-Sectional Exploratory Study from South India

BACKGROUND

Concern is mounting regarding screen exposure among young children and its association with mental health. Children with attention deficit hyperactivity disorder (ADHD) may be more vulnerable to its effects such as increased externalizing behaviors and problems with language and cognitive development and biological functions such as sleep. We aimed to assess screen exposure in preschool children with ADHD and to study the correlation of screen time with the severity of ADHD and parental stress levels.

METHODS

Children of age 2.5-6 years, diagnosed with ADHD (n = 56) were included, and details of the total duration of screen exposure, maximum continuous screen exposure time, and types of screen-based devices used, reasons for screen exposure were collected from primary caregivers. ADHD symptom severity was assessed on Conner's Abbreviated Rating Scale. Family interview for stress and coping, adapted for ADHD, was used to measure parental stress.

RESULTS

Total screen exposure time in preschool children with ADHD was more than the recommended standards in 80.4% of children, with a median of 140.00 minutes (range: 20-500 minutes). The most commonly used modality was television (98.2%), followed by mobile phones (87.3%), tablets (17.9%), and laptops (10.7%). The severity of ADHD (r = 0.29, P = 0.02) and parent stress levels (r = 0.29, P = 0.03) were positively correlated to increased screen time exposure in the child.

CONCLUSIONS

Preschool children with ADHD have screen exposure above the recommended duration of one hour/day. Structured parent training programs for children with preschool ADHD and providing developmentally appropriate interventions are essential in curtailing screen time exposure and also to address parental stress.

Methylphenidate challenge test in adults with attention deficit/hyperactivity disorder (ADHD): Clinical effects and their predictors

OBJECTIVE

Adult and children attention deficit/hyperactivity disorder (ADHD) share similar symptoms and responses to drugs such as methylphenidate (MPH). Yet, in Europe, these drugs remain unlicensed for adults. We aimed to assess the effects of an acute MPH challenge on the four dimensions concentration, impulsivity, tension, and general well-being in ADHD adults, and identify predictors of improvement.

METHODS

Therapeutic Drug Monitoring was performed to measure MPH plasma levels. A Visual Analogue Scale was administered to patients before and after the acute MPH challenge to measure self-reported changes in the four dimensions.

RESULTS

After the acute MPH challenge, our 71 patients showed significant improvement in concentration and tension. The MPH challenge dose correlated with lower patients' age, greater side effects, increased concentration (p = .008) and decreased tension (p = .001). At multiple linear regression MPH plasma levels and absence of postdose side effects predicted concentration improvement, MPH plasma levels predicted tension improvement. MPH plasma levels were significantly higher in patients who reported an improvement in concentration, tension, and impulsivity compared to nonimprovers (p's from .001 to .004).

CONCLUSIONS

These findings point to the efficacy of MPH challenge in improving concentration and tension in adult ADHD, thus emphasizing the need for a broader treatment access for these patients.

The burden of mental disorders across the states of India: the Global Burden of Disease Study 1990-2017

BACKGROUND

Mental disorders are among the leading causes of non-fatal disease burden in India, but a systematic understanding of their prevalence, disease burden, and risk factors is not readily available for each state of India. In this report, we describe the prevalence and disease burden of each mental disorder for the states of India, from 1990 to 2017.

METHODS

We used all accessible data from multiple sources to estimate the prevalence of mental disorders, years lived with disability (YLDs), and disability-adjusted life-years (DALYs) caused by these disorders for all the states of India from 1990 to 2017, as part of the Global Burden of Diseases, Injuries, and Risk Factors Study. We assessed the heterogeneity and time trends of mental disorders across the states of India. We grouped states on the basis of their Socio-demographic Index (SDI), which is a composite measure of per-capita income, mean education, and fertility rate in women younger than 25 years. We also assessed the association of major mental disorders with suicide deaths. We calculated 95% uncertainty intervals (UIs) for the point estimates.

FINDINGS

In 2017, 197·3 million (95% UI 178·4-216·4) people had mental disorders in India, including 45·7 million (42·4-49·8) with depressive disorders and 44·9 million (41·2-48·9) with anxiety disorders. We found a significant, but modest, correlation between the prevalence of depressive disorders and suicide death rate at the state level for females (r²=0·33, p=0·0009) and males (r²=0·19, p=0·015). The contribution of mental disorders to the total DALYs in India increased from 2·5% (2·0-3·1) in 1990 to 4·7% (3·7-5·6) in 2017. In 2017, depressive disorders contributed the most to the total mental disorders DALYs (33·8%, 29·5-38·5), followed by anxiety disorders (19·0%, 15·9-22·4), idiopathic developmental intellectual disability (IDID; 10·8%, 6·3-15·9), schizophrenia (9·8%, 7·7-12·4), bipolar disorder (6·9%, 4·9-9·6), conduct disorder (5·9%, 4·0-8·1), autism spectrum disorders (3·2%, 2·7-3·8), eating disorders (2·2%, 1·7-2·8), and attention-deficit hyperactivity disorder (ADHD; 0·3%, 0·2-0·5); other mental disorders comprised 8·0% (6·1-10·1) of DALYs. Almost all (>99·9%) of these DALYs were made up of YLDs. The DALY rate point estimates of mental disorders with onset predominantly in childhood and adolescence (IDID, conduct disorder, autism spectrum disorders, and ADHD) were higher in low SDI states than in middle SDI and high SDI states in 2017, whereas the trend was reversed for mental disorders that manifest predominantly during adulthood. Although the prevalence of mental disorders with onset in childhood and adolescence decreased in India from 1990 to 2017, with a stronger decrease in high SDI and middle SDI states than in low SDI states, the prevalence of mental disorders that manifest predominantly during adulthood increased during this period.

INTERPRETATION

One in seven Indians were affected by mental disorders of varying severity in 2017. The proportional contribution of mental disorders to the total disease burden in India has almost doubled since 1990. Substantial variations exist between states in the burden from different mental disorders and in their trends over time. These state-specific trends of each mental disorder reported here could guide appropriate policies and health system response to more effectively address the burden of mental disorders in India.

FUNDING

Bill & Melinda Gates Foundation; and Indian Council of Medical Research, Department of Health Research, Ministry of Health and Family Welfare, Government of India.