<P> The IASP definition of pain as `` an unpleasant sensory and emotional experience associated with actual or potential tissue damage , or described in terms of such damage '' is derived from a 1964 definition by Harold Merskey , and it was first published in 1979 by IASP in PAIN , number 6 , page 250 . </P>
<P> The IASP definition of pain as `` an unpleasant sensory and emotional experience associated with actual or potential tissue damage , or described in terms of such damage '' is derived from a 1964 definition by Harold Merskey , and it was first published in 1979 by IASP in PAIN , number 6 , page 250 . </P>
international association for the study of pain pain definition
international association for the study of pain pain definition
`` an unpleasant sensory and emotional experience associated with actual or potential tissue damage , or described in terms of such damage ''
`` an unpleasant sensory and emotional experience associated with actual or potential tissue damage , or described in terms of such damage ''