Abdominal pain is pain that you feel anywhere between your chest and groin. This is often referred to as the stomach region or belly. Almost everyone has pain in the abdomen at one time or another. Most of the time, it is not caused by a serious medical problem. How bad your pain is does not always reflect the seriousness of the condition causing the pain. For example, you might feel severe abdominal pain if you have gas or stomach cramps due to a viral gastroenteritis. Sometimes, life-threatening conditions such as colon cancer or early appendicitis may only cause mild pain or no pain. Whether it is a mild stomach ache, sharp pain, or stomach cramps, abdominal pain has numerous causes. These include: Indigestion; Constipation; Stomach "flu"; Menstrual cramps; Food poisoning; Food allergies; Gas; Lactose intolerance; Ulcers; Pelvic inflammatory disease; Hernia; Gallstones; Kidney stones; Endometriosis; Crohn's disease; Urinary tract infection; Gastroesophageal reflux disease (GERD); Appendicitis;