Visceral Pain and Nociception
Visceral pain is pain that is caused by nociceptive information arising from the organs (viscera) of the body, e.g., the heart, stomach, intestine, bladder, and uterus.
Of all the different pain types that have undergone increasingly intensive study in the past 10–20 years, visceral pain is the poor cousin (Cervero and Laird 1999). Due to recent developments in imaging (Hobson and Aziz 2003) and the development of improved animal models with a focus on gastrointestinal tract pain (Al-Chaer et al. 2000), this deficiency is being addressed.
Visceral pain may not be evoked from all organs, either because they are not innervated or because the stimulus is inappropriate.
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