Pain is defined by the International Association for Study of Pain (IASP; 1981) as “an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage.” Pain is also referred to in a subjective sense as a feeling, and pain is considered to exist in a patient if he/she says they have pain.
In addition, it is also necessary to define the following terms as a glossary of terms related to “pain.”
KeywordsAcute/chronic pain Nociceptive pain Psychogenic pain
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