13 doctors weighed in:
Why do I always hear the term "concussion" but I never really know what happens when you get one. Anyone know?
13 doctors weighed in

David Miller
Family Medicine
6 doctors agree
In brief: Bruised brain
A concussion is, in a sense, a bruise on your brain.
When you are struck or your head suddenly jerked, your brain is "rattled around" inside your skull. This damages blood vessels, causing the damage that results from a concussion. Here is a good summary of concussion. http://www.webmd.com/brain/tc/traumatic-brain-injury-concussion-overview.

In brief: Bruised brain
A concussion is, in a sense, a bruise on your brain.
When you are struck or your head suddenly jerked, your brain is "rattled around" inside your skull. This damages blood vessels, causing the damage that results from a concussion. Here is a good summary of concussion. http://www.webmd.com/brain/tc/traumatic-brain-injury-concussion-overview.
David Miller
David Miller
Answer assisted by David Miller, Medical Student
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3 doctors agree
In brief: Loss of consciousness
Concussion refers to an immediate and transient loss of consciousness accompanied by a brief period of amnesia after a blow to the head.
The extent of the amnesia roughly correlates with the duration of loc and the severity of head injury. There is both anterograde amnesia (can't retain new info) & retrograde amnesia, usually from just prior to the injury. Both improve.

In brief: Loss of consciousness
Concussion refers to an immediate and transient loss of consciousness accompanied by a brief period of amnesia after a blow to the head.
The extent of the amnesia roughly correlates with the duration of loc and the severity of head injury. There is both anterograde amnesia (can't retain new info) & retrograde amnesia, usually from just prior to the injury. Both improve.
Dr. Jonathan Dissin
Dr. Jonathan Dissin
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1 comment
Dr. Judy Orton
One can have a concussion without loss of consciousness. Any concussion with or without LOC deserves evaluation by your physician. Complete and total rest- physical and mental - is needed to avoid damage to the brain. General rule is total rest until no symptoms then however long that took, total rest for same amount of time. This is to avoid secondary impact problems which could rest in death.
Dr. Osman Farooq
Pediatrics - Neurology
2 doctors agree
In brief: Concussion
You've probably never had one - which is good! The effects of concussions can vary and be unpredictable.
It depends on the severity of the injury. The symptoms can include headache, dizziness, vision change (blurred vision/ double vision), nausea/vomiting. If your symptoms or headache are severe, or if you have a loss of consciousness, you should get evaluated immediately

In brief: Concussion
You've probably never had one - which is good! The effects of concussions can vary and be unpredictable.
It depends on the severity of the injury. The symptoms can include headache, dizziness, vision change (blurred vision/ double vision), nausea/vomiting. If your symptoms or headache are severe, or if you have a loss of consciousness, you should get evaluated immediately
Dr. Osman Farooq
Dr. Osman Farooq
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Dr. Mark Diamond
Pediatrics
In brief: More symptoms
More and more is being learned about concussions.
Obvious symptoms may include fatigue, nausea, blurred vision, pain upon light exposure.And headaches. Subtle symptoms include " muddy thinking", slow reflexive response, poor school work etc.Final resolution may take months. There are validated tests and specialists for proper evaluation and they should be used.

In brief: More symptoms
More and more is being learned about concussions.
Obvious symptoms may include fatigue, nausea, blurred vision, pain upon light exposure.And headaches. Subtle symptoms include " muddy thinking", slow reflexive response, poor school work etc.Final resolution may take months. There are validated tests and specialists for proper evaluation and they should be used.
Dr. Mark Diamond
Dr. Mark Diamond
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