response to pain (GO:0048265)

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion enzyme production, gene expression, etc.) as a result of a pain stimulus. Pain stimuli cause activation of nociceptors peripheral receptors for pain, include receptors which are sensitive to painful mechanical stimuli, extreme heat or cold, and chemical stimuli.

References

gene ontology: GO:0048265 PMID: 12843304 PMID: 12723742 PMID: 10203867