When the picture was released, the added information mentioned a "light" pneumonia. That is the shit you get if you can't swallow correctly anymore, and is one of the main killers of people who suffer strokes. If he was lying around for a few hours before he found him, his brain scans will probably show severe brain damage on his right side brain. He might recover enough faculties to not die for the next years, but i see no way for him to come back and work.