Fred Trump Sr. appears to have started showing dementia or Alzheimer’s-related symptoms in his late 80s, with one report saying “about 86, 87” when the decline began. He died at 93 in 1999 after years of cognitive decline.

What the reports say

  • One recent report quotes Donald Trump saying his father started getting symptoms at “about 86, 87.”
  • Another source says Fred Trump Sr. was diagnosed in 1991 and lived eight more years, dying at 93 in 1999.
  • A separate summary also says he had Alzheimer’s “for a very, very long time.”

Careful note

Different accounts use different wording—some say “dementia,” others say “Alzheimer’s,” and those terms are not always used consistently in news coverage. The clearest age given in the available reporting is around 86–87.