Link Found Between Brain Injury and ADHD
Researchers have found a strong association between attention-deficit hyperactivity disorder (ADHD) and traumatic brain injury (TBI). In fact, according to a study published in the Journal of Psychiatric Research, people who have suffered a brain injury are more than twice as likely to report symptoms of ADHD than those who haven't had a head injury.
For the study, scientists at St. Michael's Hospital in Toronto examined the responses of 3,993 adults 18 and older participating in the Centre for Addiction and Mental Health's (CAMH) Monitor, which is a continuous survey assessing the physical health, mental health and substance use of adults in Ontario. The researchers found that among participants with a history of TBI, 5.9 percent said that they had previously been diagnosed with ADHD at some point during their life. An additional 6.6 percent went on to screen positive for ADHD on the Adult ADHD Self-Report Scale during their phone interviews.
Experts have previously suggested that TBI could result in psycho-neurological changes that increase the chances of ADHD developing. Others, however, have suggested that the cause and effect may be the reverse--that people with ADHD have a higher risk of falling or having an accident that could cause a TBI.
The researchers suggested that adults assessed for ADHD should also get tested for TBI.