Although unpleasantness is an essential part of the IASP definition of pain, it is possible to induce a state described as intense pain devoid of unpleasantness in some patients, with morphine injection or psychosurgery. Such patients report that they have pain but are not bothered by it; they recognize the sensation of pain but suffer little, or not at all. Indifference to pain can also rarely be present from birth; these people have normal nerves on medical investigations, and find pain unpleasant, but do not avoid repetition of the pain stimulus. COUNT 5
QSN1 Which type of injection has caused patients to report they have pain but aren't bothered by it? ANS1 morphine QSN2 How much do some patients going through psychosurgery suffer from the sensation of pain? ANS2 little, or not at all QSN3 IASP's definition of pain includes what aspect as an essential part? ANS3 unpleasantness QSN4 What is it possible to induce which is, contrary to expectations, devoid of unpleasantness? ANS4 a state described as intense pain QSN5 What perspective towards pain are some people with perfectly normal nerves born with? ANS5 Indifference