Contusion: Contusion and concussion are two different things. Concussion can cause bruising or contusion of the brain.
Answered 6/22/2013
5k views
Not a sign: I presume yoiu mean brusing of your head. It is not a sign of concussion, a mild brain injury. It is a sign of a head injury.
Answered 4/20/2015
2.9k views
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