A second concussion can be fatal. From what I have read it's more likely in teenagers but the risk is still there. It would be negligent to let him race at all.
http://en.wikipedia.org/wiki/Second-impact_syndrome
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A second concussion can be fatal. From what I have read it's more likely in teenagers but the risk is still there. It would be negligent to let him race at all.
http://en.wikipedia.org/wiki/Second-impact_syndrome