I do think your list is pretty accurate, and is in order of most probable or highest percentage of reason.
I tend to think your H has all those things in play. The most pertinent being fear and control, and then all the way down the list. It definitely is not just one thing.
Sorry about son. This has been hard on him. What year is he in? I hope he does well in his finals and the break helps. It would be nice if Dad would see him; it would probably be good for both of them.
Good for you booking an appointment to discuss medication for son. I am sure it will be informative. I understand your feelings of how you don’t want it and yet how it might be becoming necessary. How does son feel about maybe taking medication?
DnJ
Feelings are fleeting. Be better, not bitter. Love the person, forgive the sin.