The evidence that TBI is becoming a real problem is certainly compelling, but PTSD occurs in many people who didn't suffer from this. However, I'm on the side

The evidence that TBI is becoming a real problem is certainly compelling, but PTSD occurs in many people who didn't suffer from this. However, I'm on the side that thinks that periods of intense stress can produce a permanent, possibly physical, change in a person. These periods can be prolonged or particularly intense moments.