In a surprise only to Donald Trump (he’s forgotten since the last time they said anything), top doctors are now saying there’s definitely something going on with the former president.

In an interview with Stat News, a number of experts in memory, psychology, and linguistics reached a consensus. Donald has been on a downward slope since he assumed the presidency nearly 8 years ago.

Now, some of that can just be chalked up to age — not that that makes it any better.

But it goes deeper than that, say the professionals. They’re willing to overlook the simple errors, like mixing up Obama and Biden. They were both president, after all. And mixing up Nancy Pelosi and Nikki Haley, although they’re from different parties, is likewise excusable. He doesn’t like either one, and their names sound similar.

“Everyone to some degree has some level of mixing up of names,” said Ben Michaelis, a clinical psychologist. “It’s a bit of a red herring.”

Zenzi Griffin, a psych professor at the University of Texas, agreed: “That level of similarity really makes it an easy error to make”

But Michaelis says it is a little weird that Trump is so frenetic while speaking, jumping from idea to idea. “There’s reasonable evidence suggestive of forms of dementia. The reduction in complexity of sentences and vocabulary does lead you to a certain picture of cognitive diminishment.”

Michaelis did allow for age, saying “Tangentiality certainly amped up and it’s difficult to follow him. You’d expect some cognitive diminishment of course, he’s 78 years old — if he was your grandfather you wouldn’t expect anything different. He just happens to be running for president.”

But using words in the incorrect order? That’s likely something different.

And when Trump does jump around on topics, it’s probably related to “the part of the brain involved in executive function such as planning and problem-solving,” according to Andrew Budson, a neurology professor at Boston University.

Though that could be ADHD or Alzheimer’s, “There are absolutely changes that are occurring, without any doubt,” Budson said. “Now, it’s much more about evoking different things, using general terms and saying the same thing again and again, then jumping to something else, then jumping back to it.”

But the most blistering statement of all for Trump has to be from James Pennebaker, a social psychologist from U of T:

“He does not think in a complex way at all.”

Gee, you reckon?