This pain or discomfort is felt for different reasons and should always be reported to a doctor or nurse. Abdominal pain . The body has systems of nerves that are connected to all body parts, inside and out. These nerves send messages along certain paths that lead to the brain. Others relay messages of change in temperature, swelling, pressure, and toxins that are produced in infections.
Most abdominal pain comes from something abnormal happening in the bowel or bladder.
Cramp or spasms can occur when there is blockage in the intestines and it begins to swell. Some medicines given to help the liver can cause discomfort in the bowels. Bladder or bowel problems can also cause pain in the lower part of the abdomen. If there is pain under the ribs on the right side, it could be caused by swelling of the liver due to a virus like hepatitis, too much alcohol intake, or a tumor. Bile duct pain.