It could either be a buildup of fluid or a trauma tumor. Does it feel soft? If so its probably fluid and can be drained. If you're not squeamish and a total badass you can fix this yourself with some patience and a scalpel.
EDIT: It could also be a cyst which you should definitely get a...
Androgenic Alopecia is 80% genetics and 20% lifestyle/diet. Blood flow theory does actually have SOME credibility to it.. Such as that follicles cannot grow without blood supply, but that's where it ends. So basically almost zero credibility.
I'm exactly the same bro. On a boat load of meds (excluding hair loss) to treat my conditions. I had to get drunk to attend my own sisters funeral, I dont regret it as I wouldnt have been able to go otherwise.
That's so insane every day would become drinking day for me. I hope you're holding up ok. A very similar case happened where I live. Small town, hadn't had a murder in 100 years then some dude cuts off his mothers head claiming shes a witch. He's in a secure medical facility now.
Its not finasteride or minoxidil, likely you're just getting older. People love to point the finger at what they're taking rather than their own mortality. This is coming from someone on an extreme non transgender regimen.