--- [EMAIL PROTECTED] wrote:
> [EMAIL PROTECTED] writes:
>
> > A less ominous but equally "efficacious" cause is
> > closed head injury (also called Traumatic Brain
> > Injury); even one significant concussion/CHI (that
> > lands the person in the ER, frex) can result in
> > degradation of higher ('executive') functions, as
> can
> > repeated head blows even if they don't cause
> > black-outs (look at Mike Tyson!).
>
> Concussions are single episode of minor head trauma
> with brief period (< 5min) loss of consciousness
> and/or retrograde amnesia with no focal neurologic
> deficit. Headache, inability to concentrate, memory
> loss are consequences of minor trauma. Findings
> usually resolve within a few days but in some
> individuals it lasts for several months. Complete
> recovery occurs in virtually all patients.
>
> More significant trauma (moderate and severe trauma)
> are characterized by prolonged loss of consciousness
> focal neurologic deficits (e.g paralysis) seizures.
> Patients recover variably and over months to years
> with intensive rehabilitation.
Thanks for the clarification - I should have defined
"significant concussion/CHI" more accurately. However,
even minor head trauma/concussions, if repeated over
time, can cause subtle neurological deficits, some of
which are long-term.
Debbi
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