More about concussion symptoms
Though you may have a visible cut or bruise on your head, you can’t actually see a concussion.
Concussion symptoms are usually associated with blacking out or a loss of consciousness. The research has shown that athletes with recurrent concussions take longer to recover and have more severe symptoms with each successive concussion. The injury can cause the brain to have trouble working normally for a short time.
The causes of concussion are motor accidents, accidental falls and a hard blow in the head, probably by a blunt object. The violent shaking causes the brain cells to become depolarized and fire all their neurotransmitters at once in an unhealthy cascade, flooding the brain with chemicals and deadening certain receptors linked to learning and memory.
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