Why would my grandpa not be able to be woken up and be crazy out of it

[Mack5104]

Please help me help my My grandfather is 78..His brother dies a month ago and all this started the same day.. my grandpa didn't know where he was and tried to pee in the car..He was very confused.. got home he went to sleep and we couldn't wake him up at all..When we  did he got up to go to the bathroom and he stood there trying to put his hand on the wall and his arms and legs were just falling every 2 seconds..He was bouncing standing up..He peed on his self 3 times. We called the ambulance but they just  sent him home and said he was tired. He hasn't slept good for a few years now..He got over that spell and has had one a week since then..We have taken him to different hospitals and called the ambulance about 6 times but they say the hospital can't help him..We went to a neurologist and they said his left side of his brain has shrunk by 20% from old age..He says the wrong word in a sentence when he has these episodes..When he isn't having one he is completely normal..And when he has one sometimes his pulse is 40 and sometimes his blood pressure is high but the Dr just changes his medicine..He has been on these meds for years now..He gets a lost look in his eyes and says he is swimmy headed before it all starts..Any ideas please..We love him very much and can't find the problem anywhere we look for help..We shake him for an hour and he can't stay awake at all if we do wake him up..he falls down if he tries to get up..Normally he will sleep about 5or 6 hours a night off and on and take a nap during the day..The Dr said his body is shutting down because he isn't sleeping enough..He has done this the past 10years and these episodes just started a month ago..please help..At the hospital we had to pick him up and put him in a wheel chair because they discharged him even though the nurse couldn't wake him up..He does not sleep like that..why is he doing these things all of a sudden

[Morpheus1517]

Hard for any of us to say, but you are doing the right thing by taking him to doctors.  If it were me I'd go to a neurologist for a second opinion.  If you think it's a sleep issue, you might ask for a referral to an MD who specializes in sleep.

[Mack5104]

We took him to a nuerologist...They did a MRI and said his brain had shrunk by 30%..His heart Dr said it isn't his heart..