[generally]

I have multiple hypotheses on no name....

1. He’s really got brain cancer and is being treated, just as has been reported. (Low probability).
2. He’s already dead. (10%). If so, they are pretending he’s not it’s for political reasons including affecting the appointment of his successor.
3. He’s in a coma. (2%)
4. He’s been arrested. (40%). Maybe being held at Gitmo, but at any rate unable to communicate.
5. He’s faking the illness (20%)
5.a. Faking in order to disappear and take on a new identity.
5.b. Faking in order to avoid prosecution. Will claim he is incompetent to stand trial.

Maybe some other possibilities, but those are my top contenders at this time.

[generally]

If you need some amusing reading from POTUS, I found this on Wikipedia:

https://en.wikipedia.org/wiki/List_of_nicknames_used_by_Donald_Trump

[aMorePerfectUnion]

6. Under house arrest...?

[cherry]

with the hippa laws, anyone can come out and say anything about their health and we would have no right to check it out....

infact, thinking today that maybe that is the ultimate reason for the Hippa law...to protect the elites....

[ssschev]

I would up #3 to 30-40% as he has not been heard from directly for a few weeks as far as I have heard.
The other possibilities are good assumptions as far as anyone knows.