- Visceral pain arises from the activation of nociceptors in the internal organs, which have poorly localized sensory innervation.
- Unlike somatic pain, visceral pain fibers converge on the same spinal neurons as somatic fibers, leading to referred pain and making it difficult to pinpoint the exact source.
- This type of pain is typically described as dull, aching, or crampy, reflecting the diffuse nature of visceral sensory pathways.
- The lack of precise localization distinguishes visceral pain from sharp, well-localized somatic pain.

Reference: Davidson’s Principles and Practice of Medicine, 24th Edition, Chapter: Pain, Page 60.