One day last week my dad got up very early and was sitting in the livingroom when I woke up, said he didn't know where he was. As the day went on I thought that had passed, but he was actually faking like he knew things (like where his room was and that he lived with me.) His doctor came this week (yes he does house calls) and I told him about it and he said it sounded like a mini stroke/TIA. My dad has had two TIA's and usually his speech goes with it? I kind of thought it was more like an all day sundowners. Anyway, has anyone else experienced this type of behavior?? My dad has dementia we believe caused from head injures.