Researchers study link between persistent concussion symptoms and recovery outcomes in children

Sleep problems, fatigue and attention difficulties in the weeks after a child's concussion injury could be a sign of reduced brain function and decreased grey matter.

Researchers from The University of Queensland have studied persistent concussion symptoms and their link to poorer recovery outcomes in children.

UQ Child Health Research Centre Research Fellow Dr. Kartik Iyer said information from the study could help parents and doctors assess the risk of long-term disability.

In the MRI scans of children with persistent concussion symptoms, poor sleep was linked to decreases in brain grey matter and reduced brain function," Dr. Iyer said.

Identifying decreases in brain function can allow us to predict if a child will recover properly.

This knowledge can help clinicians ensure a child receives targeted rehabilitation such as cognitive behavior therapy, medication to improve sleep, or safe and new emerging therapies such as non-invasive brain stimulation to potentially reduce symptoms."

Dr. Kartik Iyer, UQ Child Health Research Centre Research Fellow  

Researchers were able to predict with 86 per cent accuracy how decreases in brain function impacted recovery two months post-concussion.

"Generally, children with persistent concussion symptoms will have alterations to their visual, motor and cognitive brain regions but we don't have a clear understanding of how this develops and how it relates to future recovery," Dr. Iyer said.

"It can have a serious impact on their return to normal activities, including time away from school, difficulties with memory and attentiveness, disturbances to sleeping habits and changes to mood - all of which affect healthy brain development."

Most children recover fully after a concussion, but one in 10 has persistent symptoms.

"It is critical that children who receive a head injury see a doctor and get professional medical advice soon after their injury has occurred," he said.

"While playing sports or riding bicycles or scooters, children should wear proper protective head gear to minimize the impact of a head injury."

For children with persistent concussion symptoms, a child-friendly non-invasive brain stimulation therapy is being trialed at UQ's KidStim laboratory.

Families interested in contacting the study team and registering their interest can contact the Acquired Brain Injury team.

Source:
Journal reference:

Iyer, K.K., et al. (2019) Default mode network anatomy and function is linked to pediatric concussion recovery. Annals of Clinical and Translational Neurology. doi.org/10.1002/acn3.50951.

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