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Study finds concussions' effects linger for children

Study finds concussions' effects linger for children

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CHICAGO -- Children with even relatively mild concussions can have persistent attention and memory problems a year after their injuries, according to a study that helps identify which kids may be most at risk for lingering symptoms.

In most kids with these injuries, symptoms resolve within a few months, but the study results suggest that problems may linger for up to about 20 percent, said study author Keith Owen Yeates, a neuropsychologist at Ohio State University's Center for Biobehaviorial Health.

Problems like forgetfulness were more likely to linger than fatigue, dizziness and other physical complaints, the study found.

Forgetfulness, difficulty paying attention, headaches and fatigue were more common in study children who lost consciousness or who had other mild head trauma that caused brain abnormalities on imaging tests, compared with kids who didn't get knocked out or who had normal imaging test results.

The study looked at symptoms up to a year after injury so it doesn't answer whether any kids had longer-lasting or permanent problems.

"What parents want to know is if my kid is going to do OK. Most do OK, but we have to get better at predicting which kids are going to have problems," Yeates said.

Those who do may need temporary accommodations, including extra time taking school tests, or wearing sunglasses if bright light gives them headaches, he said.

Most children studied had concussions from playing sports or from falls. About 20 percent had less common mild brain trauma from traffic accidents and other causes.

Concussions involve a blow to the head that jostles the brain against the skull, although imaging scans typically show no abnormalities. Other mild brain trauma can cause tissue damage visible on these scans.

The study included 186 children aged 8 to 15 with mild concussions and other mild brain injuries treated at two hospitals, in Cleveland and Columbus, Ohio. The reports are based on parents' reports of symptoms up to 12 months after the injuries.

The results were published online Monday in Archives of Pediatrics & Adolescent Medicine.

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