20, 2015— A new study has found a “significant
association” between adults who have suffered a traumatic brain injury at some
point in their lives and who also have attention deficit hyperactive disorder.
study, published today in the Journal of
Psychiatric Research, supports research that found a similar association in
children, said Dr. Gabriela Ilie, lead author of the study and a post-doctoral
fellow at St. Michael’s
used in the adult study was collected by the Centre for
Addiction and Mental Health (CAMH)’s Monitor, a continuous,
cross-sectional telephone survey of almost 4,000 Ontario residents age 18 and older.
Traumatic brain injury was described as any injury to the head that resulted in
loss of consciousness for at least five minutes or overnight hospitalization.
ADHD was measured by self-reported history of an ADHD diagnosis or the Adult ADHD
Self-Report Scale known as the ASRS.
adults with a history of TBI, 5.9 per cent reported having been diagnosed with
ADHD in their lifetime and another 6.6 per cent screened positive for ADHD when
the self-report scale was conducted during the phone survey.
clinical studies have suggested a relationship between ADHD and TBI that were
experienced in childhood.
is not be surprising because some of the most persistent consequences of TBI
include ADHD-like symptoms, such as memory and attention impairment, deficits
in executive functions such as planning and organization, processing consonants
and vowels and impulsive behaviour,” Dr. Ilie said.
studies have suggested that TBI may lead to psycho-neurological changes that
facilitate ADHD or ADHD may increase the probability that a person may fall or
have another accident that will result in a TBI.
it may be useful to assess TBI history during screening and assessment of ADHD
in the adult population,” Dr. Ilie said.
Robert Mann, senior scientist at CAMH and co-principal investigator said this
latest study extends previous findings from the research team about the
association between TBI and mental health and addiction issues.
new data suggest a significant association between ADHD and TBI,” Dr. Mann
said. “We see that adults with TBI are more than twice as likely than those
without to report symptoms of ADHD.”
brain injuries are increasing in developed countries. The World Health
Organization has predicted that by 2020 TBI will become the third largest
contributor of disease and disability in the world, following heart disease and
from team sports such as hockey and football have been identified as the main
source of TBI among youth, while falls and motor vehicle collisions are the
main causes among adults.
work was financially supported by the Canadian Institutes of Health Research
and by the Ontario Neurotrauma Foundation. Additional funding was obtained from
AUTO21, a member of the Networks of Centres of Excellence program that is
administered and funded by the Natural Sciences and Engineering Research
Council, the Canadian Institutes of Health Research, and the Social Sciences
and Humanities Research Council, in partnership with Industry Canada.
Author block: Gabriela Ilie, PhD St.
Michael Hospital and University of Toronto; Evelyn R. Vingilis,
PhD, University of Western Ontario; Robert E. Mann, Centre for Addiction and Mental
Health and University of Toronto; Hayley Hamilton, Centre for Addiction and
Mental Health and University of Toronto; Maggie Toplak,
York University; Edward M. Adlaf, Centre for
Addiction and Mental Health and University of Toronto; Nathan Kolla, Centre for Addiction and Mental Health and
University of Toronto; Anca Ialomiteanu, Centre for Addiction and Mental
Health; Mark van der Mass, University of
Toronto; Larissa Vingilis-Jaremko, University of
Toronto; Jürgen Rehm, Centre for Addiction and Mental Health and University of
Toronto; Michael D. Cusimano, St. Michael Hospital and University of Toronto.
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St. Michael’s Hospital
St. Michael’s Hospital
provides compassionate care to all who enter its doors. The hospital also
provides outstanding medical education to future health care professionals in
more than 23 academic disciplines. Critical care and trauma, heart disease, neurosurgery,
diabetes, cancer care, and care of the homeless are among the Hospital’s
recognized areas of expertise. Through the Keenan Research Centre and the Li Ka
Shing International Healthcare Education Centre, which make up the Li Ka Shing
Knowledge Institute, research and education at St. Michael’s Hospital are
recognized and make an impact around the world. Founded in 1892, the hospital
is fully affiliated with the University of Toronto.
For more information, or to arrange an interview with Dr. Ilie,
Manager, Media Strategy
St. Michael's Hospital
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The Centre for Addiction and Mental Health (CAMH) is Canada's largest
mental health and addiction teaching hospital, as well as one of the world's
leading research centres in the area of addiction and mental health. CAMH
combines clinical care, research, education, policy development and health promotion
to help transform the lives of people affected by mental health and addiction
issues. CAMH is fully affiliated with the University of Toronto, and is a Pan
American Health Organization/World Health Organization Collaborating Centre.
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Centre for Addiction and Mental Health (CAMH)
416-535-8501 ext. 36015