Doctors often cannot find the source. Causes Abdominal pain can be caused by a blockage or swelling of your appendix, chemicals and swelling that irritate nerves and body tissues, stretching of nerve fibers, infection with bacteria, or an irritation from stomach acids. It may feel like stabbing, aching, or burning in your abdomen. Pain may also spread to your back or chest. Sometimes the pain may be accompanied by nausea, vomiting, diarrhea, or fever.
Care Depends on the cause.
Your doctor will need to ask a number of questions and examine your abdomen. X-rays and tests on your blood, urine, and stool may be necessary. You may have to stay in the hospital, and you may even need surgery. If the doctor is not sure of what's causing the pain, you may need to return later or make an appointment with another doctor for more tests. Always take medicines exactly as directed.