You're injured (e.g. from a bullet/stab wound) and alone. You can't move around much without dealing with the pain first. There isn't much time; you need to get out of here soon.
You don't have any specialist medical equipment around, but maybe you can improvise some pain relief based on what the environment affords.
The environment can be chosen to suit the plot, but what environment would realistically contain substances and implements which could be used to get immediate, temporary, significant reduction in pain to a small region of the body? And what would the side-effects be?