article_snippet: Dr Norman Lehman from Ohio State University said there was evidence of prior concussive injury, according to The Columbus Dispatch.
article_snippet: Dr Norman Lehman from Ohio State University Ohio State University said there was evidence of prior concussive injury.
article_snippet: Dr Tom McAllister, chairman of psychiatry at Indiana University, who has studied concussions in college athletes, said that brain injuries seem to increase the likelihood of depression.
article_snippet: If the person had depression or an anxiety disorder in the past, 'it often is the case that the concussion seems to exacerbate the concussion,' the person said. '
article_snippet: brain injuries don't occur in a vacuum.
article_snippet: People bring People own past history...into the injury.'
highlights_snippet: Dr Norman Lehman found evidence of prior concussive injury; but not chronic traumatic encephalopathy (CTE)
  