It’s suitably vague concussion is generally described as mild brain injury,
not heard any medical bods grade it.
Generally in terms of grading they use the Glasgow coma score and how long
post injury amnesia lasts.
But while these do generally correlate with outcomes at a population level
there is quite a variability should note that concussion has no physical
thing that can be seen on a scan ie no bleed internally etc, so working out
how well someone will recover is difficult and under research due to its
repeated exposure to sports and military folks.
> The earliest date mentioned for the accident was Dec 18, 2009. RBT on
> Google Groups shows postings by Tom prior to Dec 18, 2009:
> <
https://groups.google.com/g/rec.bicycles.tech/search?q=author%3ATom+author%3AKunich+before%3A2009-12-18>
> From reading a few of Tom's postings both before and after Dec 18,
> 2009, I don't see any change in attitude or creative writing.
>
> There were some other dates claimed, but I haven't had time to find
> and document them. From the above, the concussion occurred somewhere
> between Dec 2009 and July 2016. This makes me wonder if there
> actually had been a concussion and why no photo of the broken CF fork.
> There's no proof that Tom did or did not have an accident, but the
> questionable chronology makes me very suspicious.
>
Doesn’t require much force to cause a concussion if one is unlucky even non
impact to head but jolt from impact it’s self.
If he is on anti epilepsy medication which he claims that would correlate
as epilepsy after any head trauma is fairly common.
Roger Merriman