It is important to see a doctor following any injury to the head in order to assess the likelihood of concussion and devise a recovery plan. Although people experiencing concussion may display perceptible symptoms such as nausea, headaches and slurred speech, these may only begin to occur several hours or days after the injury itself.

People do not always exhibit or notice the physical or behavioral symptoms of concussion, so it is important to look out for signs of concussion in all cases where a person has sustained an injury to the head. For this reason, many cases of concussion go unnoticed or undiagnosed. In the immediate aftermath of the causal injury, concussion itself is initially a microscopic injury to the brain which will not be visually evident if the brain is scanned, e.g. It is sometimes possible to see the outward signs of concussion, such as dizziness, nausea or confusion. This means that, after trauma, it becomes increasingly likely that the normal movements of the brain inside the skull, which would normally not cause any damage to the brain, could go on to result in bruising and bleeding. This trauma can stretch or damage brain cells. It involves the short suspension of the brainвЂ™s normal function as it responds to the impact of an injury to the head вЂ“ such as a knock or fall.Д¬oncussion can result from any injury in which the brain is jolted from its usual position to the extent that it hits the inner wall of the skull.

Concussion is a condition that occurs as a result of a mild traumatic brain injury (mTBI).

Unequal pupil size concussion