Mental Health Disorders may Occur After a Mild Head Injury

by Mohamed Fathima S on  February 1, 2019 at 8:01 PM Mental Health News
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Approximately one in five individuals may sustain mental health symptoms after a mild traumatic brain injury (mTBI) for up to six months. The scientists stress on the importance of follow-up care for these patients because they are at an increased risk of developing post-traumatic stress disorder (PTSD) or major depressive disorder or concussion following mild TBI.
Mental Health Disorders may Occur After a Mild Head Injury
Mental Health Disorders may Occur After a Mild Head Injury

The findings were published in JAMA Psychiatry.

"Mental health disorders after concussion have been studied primarily in military populations, and not much is known about these outcomes in civilians," said Patrick Bellgowan, Ph.D., NINDS program director. "These results may help guide follow-up care and suggest that doctors may need to pay particular attention to the mental state of patients many months after injury."

In the study, Murray B. Stein, M.D., M.P.H., professor at the University of California San Diego, and his colleagues investigated mental health outcomes in 1,155 people who had experienced a mild TBI and were treated in the emergency department. At three, six, and 12 months after injury, study participants completed various questionnaires related to PTSD and major depressive disorder. For a comparison group, the researchers also surveyed individuals who had experienced orthopedic traumatic injuries, such as broken legs, but did not have head injury.

The results showed that at three and six months following injury, people who had experienced mTBI were more likely than orthopedic trauma patients to report symptoms of PTSD and/or major depressive disorder. For example, three months after injury, 20 percent of mTBI patients reported mental health symptoms compared to 8.7 percent of orthopedic trauma patients. At six months after injury, mental health symptoms were reported by 21.2 percent of people who had experienced head injury and 12.1 percent of orthopedic trauma patients.

Dr. Stein and his team also used the data to determine risk factors for PTSD and major depressive disorder after mTBI. The findings revealed that lower levels of education, self-identifying as African-American, and having a history of mental illness increased risk. In addition, if the head injury was caused by an assault or other violent attack, that increased the risk of developing PTSD, but not major depressive disorder. However, risk of mental health symptoms was not associated with other injury-related occurrences such as duration of loss of consciousness or posttraumatic amnesia.

"Contrary to common assumptions, mild head injuries can cause long-term effects. These findings suggest that follow-up care after head injury, even for mild cases, is crucial, especially for patients showing risk factors for PTSD or depression," said Dr. Stein.

This study is part of the NIH-funded TRACK-TBI initiative, which is a large, long-term study of patients treated in the emergency department for mTBI. The goal of the study is to improve understanding of the effects of concussions by establishing a comprehensive database of clinical measures including brain images, blood samples, and outcome data for 3,000 individuals, which may help identify biomarkers of TBI, risk factors for various outcomes, and improve our ability to identify and prevent adverse outcomes of head injury. To date, more than 2,700 individuals have enrolled in TRACK-TBI.

A recent study coming out of TRACK-TBI suggested that many TBI patients were not receiving recommended follow-up care. "TRACK-TBI is overturning many of our long-held beliefs around mTBI, particularly in what happens with patients after they leave the emergency department. We are seeing more evidence about the need to monitor these individuals for many months after their injury to help them achieve the best recovery possible," said Geoff Manley, M.D., professor at the University of California San Francisco, senior author of the current study and principal investigator of TRACK-TBI.

Future research studies will help identify mental health conditions, other than PTSD and major depressive disorder, that may arise following mTBI. In addition, more research is needed to understand the biological mechanisms that lead from mTBI to mental health problems and other adverse outcomes, such as neurological and cognitive difficulties.



Source: Eurekalert

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