What does boredom feel like with ASPD? Is it a numbness to a lot of activities ? Is it more of a physical sensation like needing to fidget?
Boredom is a nightmare. A constant, unbearable nightmare. And I would say it's very much both of those.
Since I have a very low baseline arousal and I'm chronically understimulated, activities that would usually help with normal boredom don't really do anything for me because they don't give me enough stimulation to really quench that thirst. Essentially, people are usually at 0 while I'm at -20, so the little things that get them from 0 to 5 get me from -20 to -15, and it ends up being nothing.
I'm also unable to really connect with anything on a deep, emotional level, and thus the things that I do enjoy are still not enough to satisfy me like they would with someone else. I do have one exception when it comes to this due to me also being autistic, but I won't get into that because it's not particularly relevant nor does it really fix my chronic boredom.
It's definitely physical as well, probably a lot more than you would imagine. Boredom to me feels like a heavy weight inside my chest; like a desperate need to do something grand enough to fill that gaping void. It feels like I've been trapped inside a cage since the day I was born, just staring at the same old enclosure for years on end.
Imagine only being able to play one singular videogame for your entire life, nothing more. Just eat, sleep, do whatever you need to do to stay alive, and play that game over and over again. Sure, it's entertaining enough for maybe a month if you want to explore everything it has to offer, but what then? You play it again, you look for secrets, you look for bugs, you play it again, you play it again, you play it again. You can do anything you want inside the game, but what happens when you've done it all? Well, that's how you're going to live for the rest of your life.
That's how it feels. Every day is dull; sometimes better and sometimes worse, but always dull. Some things manage to fix the boredom for a couple hours if you're lucky, but it will be back because it always is.
For me, the only thing I can really do to "manage" it that doesn't involve any atrocious acts is raise that level of arousal as much as I can with the little things. -10 fucking sucks, but I guess -20 sucks more. It's all you can do when only burning a city to the ground or shooting up a bunch of people gets you to a positive 20 and you don't want to ruin your life.