What disease might Donald Trump be suffering from?

[Doodley]

6. Behavioral variant frontotemporal dementia (bvFTD)

I believe he has this. I would also say look at how he talks in interviews when he was younger - very different, gives more complex answers, shows some modesty, wants to share credit with others. He hasn't always been so sick.

bvFTD affects behavior, including (edited to show behaviors most relevant to Trump):

Disinhibition - A loss or lack of restraint based on social norms, leading to inappropriate behavior and impulsivity.

Emotional Blunting

Loss of warmth, empathy, or concern for others. Behaviors may include:

Indifference to important events (e.g., death of a family member or friend);

Failure to recognize that loved ones are upset or unhappy

Difficulty planning the day’s activities

Questionable financial decisions

On-the-job mistakes

Agitation, emotional instability. These may be conveyed through:

Frequent and abrupt mood changes

Lack of insight

Failure to recognize changes in behavior or exhibit awareness of effects of behavior on others.

Blaming others for consequences of socially unacceptable behavior.

https://www.theaftd.org/what-is-ftd/behavioral-variant-ftd-bvftd/