Illest I've probably ever been was back in the USA, when I had frequent hospital visits during Winter, due to asthma attacks.

TW for scrapes, mentions of fainting, a needle and scaring; Worst injury is harder to pinpoint, since there were 3 instances that were extreme;

1 - Twisting my wrist once; I tripped and slid across a slippery hallway floor. It was hard to write for a while.

2 - Falling down some stairs, on to pebbled concrete surface. The scrapes were everywhere, I'm not going to get descriptive. The shock was enough to have me fade in and out of conscious, but I still managed to walk and an ex was helping me.

3 - The freakish accident I caused when pushing a syringe away from my thigh. I got a wound for a while. Even if the needle was giving me a numbing agent, making it a little harder for me to walk, I think the wound worsened my mobility just as much.