causes of right side abdominal pain
Sudden severe abdominal pain. If you have sudden agonising pain in a particular area of your tummy, call your GP immediately or go to your nearest A&E department. It may be a sign of a serious problem that could rapidly get worse without treatment. Serious causes of sudden severe abdominal pain include: 1  appendicitis â the swelling of the appendix (a finger-like pouch connected to the large intestine), which causes agonising pain in the lower right-hand side of your abdomen, and means your appendix will need to be removed.