Abdominal pain can arise from a vast array of diseases or conditions. It is often difficult to localize the source whether it be from an internal organ in the abdominal cavity or the abdominal wall itself. Sometimes it is even originating in the chest and referring the pain to the abdomen as it is the case at times with pneumonia or a heart attack. It is important to seek medical advice from your primary care and/or your gastroenterologist to determine the cause and treatment.