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- Adolescents and young adults with substance use disorders (SUD) may have unrecognized traits consistent with autism spectrum disorder.
- Clinicians should assess young adults with SUD for autistic traits.
- • Parents of youths with SUD should report prior autism diagnosis to clinicians.
James McKowen, PhD
Usually studies of substance use disorder in autism are done in those with an autism diagnosis already. We have looked at this question from the other side: asking how many people with substance use disorder have autism.
Addiction Recovery Management Service, Massachusetts General Hospital
BOSTON – One in five teens and young adults who seek treatment for alcohol or drug use may have traits characteristic of a previously unrecognized autism spectrum disorder (ASD), researchers at Massachusetts General Hospital (MGH) report.
They found that among patients with an average age of 18.7 years being treated in an outpatient substance use disorder (SUD) clinic, 20% had elevated scores on the Social Responsiveness Scale-2 (SRS-2), a parent- or teacher-reported measure that has been shown to reliably identify the presence and severity of social impairment among individuals along the autism spectrum, and to distinguish autism from other disorders.
The study, results of which are published in The American Journal on Addictions, is the first to look at the prevalence of previously undiagnosed autistic traits among teens and young adults with SUD, says lead author James McKowen, PhD, of the Addiction Recovery Management Service at MGH and Harvard Medical School.
“Usually studies of substance use disorder in autism are done in those with an autism diagnosis already,” he says. “We have looked at this question from the other side, asking how many people with substance use disorder have autism.”
The researchers asked parents of 69 youths reporting for the first time to a specialty outpatient psychiatric SUD clinic to fill out the SRS-2 form. The form is designed to measure an individual’s social awareness, social cognition (thinking about other people and interactions with them), social communication, social motivation, and restricted interests and repetitive behaviors.
They found that although there were few differences between those with elevated autistic trait scores and those with lower, non-autistic scores in terms of demographic or psychiatric factors, the adolescents with higher SRS-2 scores had a nearly eightfold higher likelihood of stimulant use disorder, and a fivefold higher risk for opioid use disorder.
The findings highlight the importance of assessing patients in a SUD treatment setting for autistic traits, the researchers write.
“For clinicians, the big takeaway point from this study is that we need to get better at screening and certainly training in the presence of autism spectrum disorder, because many clinicians treat substance use disorder but don’t have specialty developmental training, particularly for issues around autism,” McKowen says.
“For parents, the big takeaway is that if you suspect that your child may have an autism spectrum issue or if school personnel have suggested that your child may have autistic traits, you should certainly get that assessed, and let your clinicians know whether your child has had a prior diagnosis of ASD,” he says.
The researchers are developing a free clinical therapy protocol that can help clinicians better address the issues of autistic traits in patients with SUD.
Study co-authors include Diana Woodward, BA, Maura DiSalvo, MPH, Vinod Rao, MD, PhD, Julia Greenbaum, BA, Gagan Joshi, MD, and Timothy E. Wilens, MD, from MGH, and Amy M. Yule, MD, from Boston University School of Medicine and Boston Medical Center.
The study was supported by grants from the Demarest Lloyd, Jr. Foundation.
About the Massachusetts General Hospital
Massachusetts General Hospital, founded in 1811, is the original and largest teaching hospital of Harvard Medical School. The Mass General Research Institute conducts the largest hospital-based research program in the nation, with annual research operations of more than $1 billion and comprises more than 9,500 researchers working across more than 30 institutes, centers and departments. In August 2021, Mass General was named #5 in the U.S. News & World Report list of “America’s Best Hospitals.”
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