Return to Sport after Repeated Concussions.

In October, 1991, a 17 year-old high school football player was tackled on the last play of the first half of a varsity game and struck his head on the ground. During halftime intermission, he told a teammate that he felt ill and had a headache; he did not tell the coach. He played again during the third quarter and received several routine blows to his helmet during blocks and tackles. He then collapsed on the field …

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