6 doctors weighed in:
What happens to the brain when someone gets a concussion?
6 doctors weighed in

Dr. Sarah Kohl
Travel Medicine
2 doctors agree
In brief: Brain cells injured
Concussions, a form of mild traumatic brain injury (tbi), are usually caused by a blow to the head which causes the brain to move within the skull.
The force of the brain moving suddenly, often bumping the skull, causes chemicals to leak out of the brain cells. It is important to rest to allow the brain to repair the damage to these delicate cells. www.cdc.gov/concussion/.

In brief: Brain cells injured
Concussions, a form of mild traumatic brain injury (tbi), are usually caused by a blow to the head which causes the brain to move within the skull.
The force of the brain moving suddenly, often bumping the skull, causes chemicals to leak out of the brain cells. It is important to rest to allow the brain to repair the damage to these delicate cells. www.cdc.gov/concussion/.
Dr. Sarah Kohl
Dr. Sarah Kohl
Thank
1 doctor agrees
In brief: See below
Dorland's medical dictionary defines concussion as loss of consciousness, or loss of memory, or a combination of both due to trauma.
Site of concussion is brainstem, which is "shocked" and transient cut-off of reticular activating system, but typically fully reversible, if no additional traumatic brain injury. Post-concussional problems may last up to 6 weeks afterwards in some cases.

In brief: See below
Dorland's medical dictionary defines concussion as loss of consciousness, or loss of memory, or a combination of both due to trauma.
Site of concussion is brainstem, which is "shocked" and transient cut-off of reticular activating system, but typically fully reversible, if no additional traumatic brain injury. Post-concussional problems may last up to 6 weeks afterwards in some cases.
Dr. Bennett Machanic
Dr. Bennett Machanic
Thank
Dr. Neil Horsley
Podiatry
In brief: Concussion
The brain bounces around in the skull like an air hockey puck.
A concussion can cause massive damage to blood vessels and sections of the brain.

In brief: Concussion
The brain bounces around in the skull like an air hockey puck.
A concussion can cause massive damage to blood vessels and sections of the brain.
Dr. Neil Horsley
Dr. Neil Horsley
Thank
Get help from a real doctor now
Dr. Eric Weisman
Board Certified, Neurology
32 years in practice
9M people helped
Continue
107,000 doctors available
Read more answers from doctors