Word for the day is "confabulation" (psychiatry).
There's no way any sane person in Trump's position could get away with abusing basically everybody, telling mistruths and outright lies, without something being seriously wrong between his ears. He probably doesn't realise...
As unwise as it may be for psychiatrists to diagnose public figures remotely, Trump is a serious danger to the world - something needs to be done.
His garbled speech, memory lapses, inappropriate behaviour - and very clearly confabulation - has to be dementia. His supporters need to stop making excuses for him. Reagan wasn't this bad.
The Republican Journal - Oct 13, 2017 - Lawrence Reichard
Executive Summary: Yes.