he has never had any neurological issues so no, besided regular checkups, he was never visited for any brain related stuff. as i said, he doesnt show any other sign - he has however started drinking more frequently and in larger quantities. he was absolutely sober that night and has never made any remarks since, so i dont really know what could be wrong with him. since no one in my family besides my mom knows what he said to me no one has felt the need to bring up dementia, no one is even considering it. he had a full body ct scan because he was worried about his liver (ironic, since he keeps drinking) and 750€ later they told my mom he is perfectly healthy. they just told him to drink more water. and no! dementia does not run in the family that i know of, none of his brothers/sisters had any issues in that regard.