yes you can be knocked out without a concussion
Yes.
That the photoreceptor's in your eyes may be weak. or that you have concussion are unconscious or drugged or that there is not much light
A contusion (bruise) would likely result from a sudden blow to the body.
If it is not treated, recognized, and/or severe, then yes, it is possible. It can kill you because, basically, it's a form of brain damage. If your concussion is very severe, and hits the right place, then it is possible that your vital functions will be compromised. Also, it is possible that if you are unconscious directly following a concussion, then you can slip into a coma. Hope this helped!
Concussion may be present without symptoms, for detecting cognitive impairment and concussions.
This statement is not true. A bruise is a contusion, which is a fancy word for an injury that causes capillaries to leak blood which causes a bruise. You might be thinking of the word concussion, which is a severe head injury, but without a broken skull. After a head injury or concussion, you should stay awake or have someone check on you every hour and wake you up. The reason is a concussion can cause someone to become unconscious or even die from the brain injury.
It depends on the severity level of the concussion. To be knocked unconscious it takes a pretty hard hit.
No one exactly knows since he got a concussion and is reacting to symptoms! I hope I answered your question!!
In motor vehicle accidents, concussion can occur without an actual blow to the head. Instead, concussion occurs because the skull suddenly decelerates or stops, which causes the brain to be jarred against the skull.
unconscious(ly)
Mild concussion
Mild concussion
Unconscious