Courtney when you said
" He could not explain lots of things because he received injuries in the crash, was placed in an induced comma and has suffered PTSD and memory loss. It implies nothing, but you are inferring more than you have evidence so to do."
As a medical fact, an individual cannot suffer from PTSD unless he has full recall of the incident. That is one of the primary pre-conditions for the diagnosis. This is set out in DSM V (in full the 5th edition of the Diagnostic and Statistical Manual of the American Psychiatric Association-the bible of all psychiatric illnesses). He may well have other conditions but he cannot suffer from PTSD if he has no recall of the accident.