I don’t know if it’s a thing or not- and maybe this isn’t quite the same but I do know that (especially in conversation), if there’s a problem to solve I’m very engaged. If there’s not it becomes hard to focus and follow the conversation- unless it’s on a topic I find stimulating. I would say that problem solving gives me gratification as well. That’s probably why I spend so much time analyzing my own problems to the death- I’m addicted to solving my ADHD problems. Also, another thing you said struck a cord with me- looking for problems where there isn’t one. I have noticed that I tend to create stimulation (read: opposition.) so I can use adrenaline/dopamine as a way to focus and be productive. Anger can be very powerful in helping me focus and be productive. I know, it sounds messed up but it’s how my brain works. I’m not currently medicated.