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Autistic traits in children with ADHD index clinical and cognitive problems.

ABSTRACT: Traits of autistic spectrum disorders (ASD) occur frequently in attention deficit hyperactivity disorder (ADHD), but the significance of their presence in terms of phenotype and underlying neurobiology is not properly understood. This analysis aimed to determine whether higher levels of autistic traits, as measured by the Social Communication Questionnaire (SCQ), index a more severe presentation in a large, rigorously phenotyped sample of children with ADHD (N=711). Regression analyses were used to examine association of SCQ scores with core ADHD features, clinical comorbidities and cognitive and developmental features, with adjustment for putative confounders. For outcomes showing association with total SCQ score, secondary analyses determined levels of differential association of the three ASD sub-domains. Results suggest that increasing ASD symptomatology within ADHD is associated with a more severe phenotype in terms of oppositional, conduct and anxiety symptoms, lower full-scale IQ, working memory deficits and general motor problems. These associations persisted after accounting for ADHD severity, suggesting that autistic symptomatology independently indexes the severity of comorbid impairments in the context of ADHD. Sub-domain scores did not show unique contributions to most outcomes, except that social deficits were independently associated with oppositional symptoms and repetitive behaviours independently predicted hyperactive-impulsive symptoms and motor problems. It would be worthwhile for clinicians to consider levels of socio-communicative and repetitive traits in those with ADHD who do not meet diagnostic criteria for ASD, as they index higher levels of phenotypic complexity, which may have implications for efficacy of interventions.

SUBMITTER: Cooper M

PROVIDER: S-EPMC3899449 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundAttention deficit hyperactivity disorder (ADHD) is a common childhood behavioral condition that globally affects an average of around 5% of children and is associated with several adverse life outcomes. Comorbidity with autism spectrum disorder (ASD) is highly prevalent. Pharmacological treatment for ADHD symptoms has been shown to be effective. However, the prevailing perception is that children with ADHD and concomitant ASD symptoms report poorer efficacy and more side effects. This has been supported by studies on this population, but prospective studies directly comparing children with ADHD and different levels of ASD symptoms are lacking. We aimed to assess if children with ADHD and concomitant ASD symptoms differ regarding effects and side-effects of pharmacological ADHD treatment compared to children with ADHD without ASD traits. This is to our knowledge the second study to directly compare the effect of ADHD medication between ADHD patients with different levels of ASD symptoms.MethodsIn a non-randomized, observational, prospective cohort study, 323 patients aged 6 to 17 years who were diagnosed with ADHD and starting pharmacological treatment were divided into two groups: one with high level of ASD symptoms (ASD group, N=71) and one with low level of ASD symptoms (non-ASD group, N = 252). Treatment outcome was measured as ADHD symptoms, and evaluated using the Swanson, Nolan and Pelham Teacher and Parent ADHD rating scale-version IV (SNAP-IV). Side-effects were evaluated using the Pediatric Side Effects Checklist (P-SEC), at 3 months follow-up.ResultsFrom baseline to 3 months, there was no significant difference in neither treatment effect nor number of clinically significant adverse events experienced between the ASD group and the non-ASD group.ConclusionsOur results did not implicate that ADHD patients with concomitant ASD symptoms have decreased treatment effect of ADHD medication than patients with ADHD without concomitant ASD symptoms. Neither did the results support that ADHD patients with ASD symptoms experienced significantly more side-effects than ADHD patients without ASD symptoms. Although, we did not analyze different medications separately, this is in line with the only previous study directly comparing methylphenidate treatment in children with or without ASD.Trial registrationNCT02136147 , May 12, 2014.

Project description:BackgroundSchool attendance problems (SAPs) are common among children and adolescents with autism spectrum disorder (ASD). Currently, there is a lack of guidelines for treatment or interventions aimed at this group.MethodTwelve clinical practitioners were interviewed via in-depth interviews using a semi-structured question guide. Interviews were audiotaped, transcribed verbatim, and initially independently coded by two coders. The interviews were analyzed according to thematic analysis.ResultsThe majority of the clinicians reported that it was common that children and adolescents with ASD at CAP had prolonged SAPs. A total of four themes and 22 sub-themes were identified in the analysis: the treatment situation; treatment goals at CAP; treatment interventions; and desired development. Insufficient adaptations in response to core impairment of ASD and lack of support in their daily life could be factors to the development of SAPs. Prolonged social isolation in combination with severe psychiatric comorbidities was reported as a treatment barrier. Also, insufficient collaboration between mental health care services, school and social services obstructed the return to school for this group of students. Favorable factors for positive treatment outcome were: early detection, accurate assessment and coordination between mental health care and schools and environmental adaptation at school as well as at home, parent support and sometimes change of school. Concerning useful therapeutic techniques, exposure from cognitive-behavioral treatment was reported.ConclusionChildren and adolescents with ASD with limited societal support tend to develop SAPs. Important factors that impact the outcome of treatment were the length of the absence from school and the severity of psychiatric comorbidities. Tailored and adapted interventions at school, parent support and mental health care are needed. Research about assessment and treatment for children and adolescents with ASD and SAPs is needed.

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Autistic traits in children with ADHD index clinical and cognitive problems.

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