Male 71 has diabeties, one year ago he was hospitalized, his blood sugar went high about 700.  He was admitted on a Friday, he was still alert, by Sunday he couldnt wake up and was struggling, like he wanted to get out of bed.  He has been in the hospital over a week.  The first time he was admitted they said it might be rocky mountain spotted fever, but that was ruled out.  This time they say it may be hashimotoencephaliris. Not sure of the spelling.
Fever is often a sign of infection somewhere in the body. It is an important immune system function that sometimes serves to kill the invading organism. People with diabetes are prone to several types of infection because of poor immunity. It is important for a person with diabetes to seek treatment for infection or a chronic fever of unknown origin, as an acute illness can make diabetes more difficult to manage. Get your septic work up done to rule out cause. And such deranged sugar levels are also one of the cause.