Sure, I don't know how it works physiologically...
But anecdata at least suggests that being in enough pain can cause panic, but it might do so indirectly so that the fear is created around the inability to think the pain will ever end or at least lessen at least a bit.
My leg has been fucked for 15 years. Sometimes it hurts so bad, I’d need narcotics to make it go away. I don’t panic when walking, I just deal with it because I need to get to my destination. If you are thirsty, you will drink through the pain. Panic is something else.
I think you've gotten fear confused with panic. Fear is indeed a learned behavior, panic is not. Panic is beyond rational thinking, it is what gets people who save drowning people dead. Panic is what gets normal humans dead when in bad situations. Panic is not learned, it saves your ass at all costs -- or gets you killed.
They’re just wrong. Neither panic nor fear is learned behaviour. What one panics about or fears is in part learned. But there is still a lot of instinct at play.
If I come into the room and stab you with a steak knife every time you drink, and sometimes even if you only think about drinking, you will definitely panic when drinking is brought up in the future, after some time.
Not sure what's wrong with you that you cannot empathize.
As someone who has most definitely been in more shit than most humans on this planet, I can empathize just fine.
As I mentioned in a sibling comment, I think you've confused fear with panic. Fear can be conditioned, panic cannot. You can panic from fear, but it is not a guaranteed thing, and often, that panic is long after the fear is gone (aka PTSD).
Panic is an autonomic response to saving yourself at all costs. It is not something you "learn" or have "conditioned" into you, and if so, definitely not over the course of a few weeks that you have a virus; otherwise we'd all be dead from Covid and go into a panic every time we cough.
Panic is what causes you to drown a person saving you, so that you can breathe. Panic is what causes you to over-correct and steer into a tree. Panic is what causes you to run out of your house, in the middle of winter in pajamas, because there was a spider. Panic has a cause, but it is mindless with the only goal of saving oneself. The action itself is often quite stupid-looking, in hindsight and lack of context.
Most people have never seen a person panic, first-hand. Most people have never panicked. Today's world is largely safe, so it is easy to confuse fear with panic.
But anecdata at least suggests that being in enough pain can cause panic, but it might do so indirectly so that the fear is created around the inability to think the pain will ever end or at least lessen at least a bit.