Knocked unconscious

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David L. Burkhead - 27 Jun 2005 20:52 GMT

The one time I had been knocked unconscious (car-bicycle accident) I woke
with essentially no memory of the events leading up to the accident,
covering, say, 1-2 hours.

Is this typical? If a person is rendered unconscious by one or more blows
to the head, would he be more likely to remember events closely preceeding
the injury or to not remember those events?

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Rafael Almeida - 27 Jun 2005 22:35 GMT

> The one time I had been knocked unconscious (car-bicycle accident) I woke
> with essentially no memory of the events leading up to the accident,
[quoted text clipped - 3 lines]
> to the head, would he be more likely to remember events closely preceeding
> the injury or to not remember those events?

I'd say it's pretty commom, I don't know exactly why it happens, but I
know some people that suffered similar accidents (car accidents,
snowboard accidents, and others) who didn't remember what happened
during it or right before it. A friend of mine was hit by a bus and he
was taken to the hospital he was awake and even making jokes with some
other friend and when he woke up from the surgery he needed done he
didn't remember even going to the hospital.

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Robert A. Fink, M. D. - 27 Jun 2005 23:59 GMT

>The one time I had been knocked unconscious (car-bicycle accident) I woke
>with essentially no memory of the events leading up to the accident,
[quoted text clipped - 3 lines]
>to the head, would he be more likely to remember events closely preceeding
>the injury or to not remember those events?

It's called "retrograde amnesia" and is quite common with simple
concussions.

Best,

Bob

Robert A. Fink, M. D.
Neurological Surgery
2500 Milvia Street Suite 222
Berkeley, CA 94704-2636 USA
510-849-2555

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NOTE: The material above is not "medical
advice". Medical advice can only be
given after an in-person contact between
doctor and patient.
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