 There is also quite substantial scientific evidence that there are abnormal pain phenomena where the sensory and affective aspects of pain experiences are dissociated from each other — see Section 6.1 below for references and for further discussion. The most typical case is known as the pain asymbolia syndrome, where people who suffer from it have pain experiences without the negative affect. Interestingly, these people still identify their experience as pain, but show no bodily, emotional, and behavioral signs typically associated with the unpleasant aspect of pains. They are feeling a pain that doesn’t hurt! If pains are not necessarily unpleasant, as this syndrome seems to show, it is an interesting and open question whether feeling pains without its negative affect would still retain its intransitive nature.