Final answer:
Visceral pain originates in the walls of hollow organs, and when it is felt in a location different from the affected organ, it is called referred pain. This occurs due to the connection of sensory pathways in the spinal cord, which can lead to the misinterpretation of the pain's origin by the brain.
Step-by-step explanation:
The type of pain that originates in the walls of hollow organs is called visceral pain. This pain can often be difficult to localize and may be experienced in areas different from where the issue originates, which is known as referred pain.
For example, strong visceral sensations from the heart can be felt as pain in the left shoulder and left arm, which is a classic example of referred pain. The phenomenon occurs because sensory fibers from visceral organs enter into the same levels of the spinal cord as the somatosensory fibers from the affected pain location, causing the brain to misinterpret where the pain is coming from.
Another type of pain related to the abdominal region is associated with the peritoneum, which involves inflammation known as peritonitis. This is a severe and life-threatening condition requiring prompt medical attention.