Okay I know it's an old thing everyone's seen a million times, but...
I really do love it when a character gets to safety after some grueling experience they survived and got out of by their own strength and skill and cunning, and... then gets drastically worse very rapidly afterwards. Just utterly collapsing, sick, out of strength, in so much pain, hardly able to get out of bed without help, probably emotionally an utter mess too
Because they've just been pushing their body on and on, to its limits and past, because they had to, because it was up to them to deal with it all, there was no help, no back-up, nothing to rely on but themself. So their mind and body have just burned up all the reserves and endured it all as best as possible, they've held together until they got out of that situation
But now that they're finally safe, their body recognizes it. Now that they're finally safe they no longer need to endure more, they no longer need to keep anything together, to push the pain and exhaustion aside and refuse to feel it in order to go on. They're finally safe to stop all of that. And so- they collapse. All of it catches up with them all at once, and they have no optipn to keep it at bay anymore, they just have to feel it. Have to suffer the consequences of all the injuries, exhaustion, whatever illness they might've picked up, whatever's going on
And they just feel so miserable and weak and vulnerable and tired, and have no real option but to allow whoever's around to care for them and deal with everything while they recover
