Visceral pain can occur from an organ not receiving enough blood, inflammation, compression, or from an infection. The pain receptors in the organ are triggered by stretch and inflammation. The pain can be perceived in tissues associated with the organ during embryonic development or that share similar innervation levels at the spinal cord with other tissues. Specific visceral pain referral patterns can be seen on the image above. The shared spinal cord nerve levels can lead to skin innervated by the level in question which is more sensitive to touch, temperature, and pressure. Refer to specific organs on main page for more info.