A new study published in the Journal of Psychiatric Research indicates that adults with a history of traumatic brain injuries may benefit from improved screening for the attention-deficit hyperactivity disorder (ADHD).
The study utilized data obtained from a telephone survey of the adult residents of Ontario, Canada.
To examine the relationship between ADHD and TBI, the researchers analyzed the responses of 3,993 adults aged 18 and above.
Surveys were carried out with Computer Assisted Telephone Interviewing during 2011 and 2012.
The study found that among people with a history of TBI, 5.9% said that they had earlier been diagnosed with ADHD at some point in their life.
Also about 6.6% went on to screen positive for ADHD on the Adult ADHD Self-Report Scale during their phone interviews.
"These new data suggest a significant association between attention-deficit hyperactivity disorder and traumatics brain injury (TBI). We see that adults with TBI are more than twice as likely than those without to report symptoms of ADHD," says co-principal investigator Dr. Robert Mann.
The Centers for Disease Control and Prevention (CDC), as of 2011, reports that around 11% of children aged 4-17 (6.4 million) have been diagnosed with ADHD, with this figure rising year after year.
The CDC reports around 2.5 million TBIs in in 2010. The World Health Organization (WHO) says that TBI could become the third largest source of disease and disability in the world by 2020.
Earlier researches have shown that there may be a link between ADHD and TBI experienced in childhood.