Thanks much for your response. I'm 55, and I'm not on any medication. I wasn't even aware of how bad my hair loss was until I recently noticed it from a top/rear video shot. I've attached shots of my hair (2 from top, plus front/back/left/right).
Seems to be an ongoing problem, because I've also noticed hair comes out every time it's brushed. So you think I should get on medication before doing an HT? That was my very next question, in fact--if my hair is falling out, won't it keep coming out after the HT?
Either way, yes, I definitely want to do this the informed and calm way, not the quick and panicked way. I've since read this promising GQ article (https://www.gq.com/story/how-istanbul-became-the-global-capital-of-the-hair-transplant). HOI doesn't sound like it would be a bad option, but I saw from the list of best surgeons that you linked that a few of them are based there in Istanbul, as well. That seems to be the best location for finding a low-cost/high-quality provider. My wife really wants to visit there, too, so it looks like Istanbul's a likely location for my HT. Hopefully I can send pics to one of the surgeons there, start a dialog, and that'll be sufficient for them to diagnose and determine what I need, yes?
There's still the question of medications, though, as far as if I should use and which I should use. So I may still take a trip to someone here in the U.S. that's on the recommended list, first. These pics are hard for me to look at, but they are what they are, and I have hope. I'll definitely be giving your book a read. Thanks again!