Any sensation that one does not enjoy or consider pleasurable. Pain is not the same as “harm”, which is permanent unhelpful damage. Many painful sensations are helpful, whereas others qualify more as suffering. Cravings can be viewed as a form of pain. Although the sensation feels uniquely different, it is not strictly “pleasurable” to feel horny, hungry, or needy. In both cases, pain and cravings are an expression of your brain, attempting to motivate you to action. Pain is very subjective, where two people can experience the same situation very differently, even where pain for one is pleasure for another.