Esposa - This sounds like something my partner (and I in the worse times) can agree to.
Not sure how helpful this will be, but it may put some things in context.
I was diagnosed with ADHD after presenting with high hypervigilance. Looking back, risky behavior provided a temporary "rush" that eased me anxiety. After doing my homework, I found the stimulant meds (Ritalin, namely) act on neropinephorine which influences the bodie's stress response (fight or flight). Risk-taking also stimulates neropinephorine and dopamine (reward system) to a similar effect. Taking the meds scratched the itch well for me. My P has also been diagnosed severe ADHD. His trauma (as a survivor) is much greater (I assume) than mine, so that model makes sense to my mind as well.
Risk-taking, adrenaline, etc seem to be quite well connected, and I provided a greater explanation as to why my P did some of thenthings he did.
Now, I'm NOT saying its ADHD. In fact, there's abundant research out there to suggest that many ADHD diagnosis might actually be PTSD.
For now, my P is quite comfortable tackling the ADHD front. When I get too high on my horse, I try to remind myself that he is doing work in himself, and that's good enough for me right now.
(Not part of your question, but Ill take any opportunity to remind myself!)
Hopefully that's a bit more to noodle on for ya'.