Oh yes, I'm very familiar with pain. Very... very familiar. Even right now I am currently wearing an arm brace (the sort that is like a band of fabric, I guess is how I could describe it) and took yet more freaking Advil earlier. Ugh.
In my case, it's a chronic thing. I'm nowhere near old enough for this nonsense, but it doesnt matter, it's there anyway, of course. It actually started quite awhile ago... I'd say probably like 2008? Hard to be sure. I graduated in 2000, so... yeah, not that old. The first time it hit me, it hit HARD. Very, very sudden. I ended up on the floor for probably about a good 20 minutes. Sciatica nerve or whatever it is had flared for the first time and I found myself mostly unable to walk for awhile. It sure wouldnt be the last time. This major flare-up can also occur in my neck. Either is very painful and can make doing much of anything very hard. The only thing that REALLY helps is physical therapy (and of course, if you've ever done PT, you know it can sometimes hurt worse than the problem, heh).
Also other similar issues. In 2010, my arm flared up for the first time, triggered by mouse use. That was bad and that did NOT fade. I actually ended up rigging a game controller to control the mouse, as I just couldnt keep up the arm/wrist movements to fully use one. This lasted for probably about 2 years. Again, therapy is what did the trick. Constantly thankful for my excellent therapist who has helped me to somewhat get this nonsense under control... I dont have flareups nearly as often and know how to avoid/prevent it. Well, my arm can flare up often enough but it typically lasts for like a day instead of 2 bloody years. I also got a vertical mouse instead of a traditional mouse, that makes a huge difference.
Overall, I have a tendency towards nerve & tendon pain. It's nothing that's genuinely dangerous or damaging... it just hurts like heck when it acts up, and sometimes "normal" pain meds (like Advil or Tylenol) simply arent strong enough to have any effect on it. I ended up with prescriptions for cyclobenzaprine and Tramadol. It didnt take long for me to learn just how strong those are. According to the docs, the "max dose" I could take (for when it was extra bad) was 2 of each at once. Yeah... I only did that like one time. That stuff could knock out an elephant. Literally almost fell asleep standing up, which is... not a very pleasant experience. Particularly when you're in a bathroom. I tell ya, I didnt do THAT again. But still, I'm glad those meds are there for when I need them. Thanks to therapy, I havent had to take the Tramadol (which is the strongest one) in quite a long while.
But still, it gets in the way, simply by the POSSIBILITY of it being there. Some things, I simply cant/wont do, because I recognize the chance of said thing causing a flareup. For instance when I was in school, I was taking golfing lessons and such. No way I could swing those clubs now. Well, I mean, I COULD, but it'd likely be a fantastically awful idea. And again, I'm not old enough for this idiocy, so that's extra frustrating.
So yeah, that's my Bloody Stupid Pain Journey. I can certainly sympathize with anyone going through anything of that nature. It sucks. A lot.