What Is Somatic Pain?

Body pain, also known as wall peritoneal pain, refers to the pain caused by the stimulation of the wall peritoneum. Body pain has the same mechanism as body surface pain, with only spinal nerves and no visceral afferent nerves involved. The sensory fibers of the spinal nerve are distributed in the parietal peritoneum, mesenteric root, and posterior peritoneum. When the lesion invades the nerve endings, the pain is reflected in the skin area dominated by the spinal cord segment.