My MIL had a stroke and had definite memory issues. We took care of her for several years. Apparently no dementia per the medicos.
I never said what I was diagnosing Trump with, but the leader of the free world is suffering definitively from a decomposition of his mental faculties combined with a power trip and his innate narcissism and sociopathy.
Also to paraphrase his first Sec State Rex Tillerson, Trump lacks intellectual curiosity beyond that of a boy playing with matches.