In WW1, they called it "shell shock" for soldiers incapacitated without obvious injury. In WW2 it was called "battle fatigue", and now TBI.
It seems the WW1 doctors got it right the first time.
It seems the WW1 doctors got it right the first time.
The concern itself was right to have, but I don't think the concern has ever gone away.
So I don't characterize that as very "right the first time".
Not at all. It might be a cause, but tons of PTSD has nothing to do with concussive trauma, so much so that the other cases overwhelmed the correlating cases when they investigated the causation.
PTSD is a different thing from TBI/CTE, overlap or not. The diagnosis for PTSD was called shell shock. They did not have it right in a general sense.