Question: how are stomach aches caused?
Answer: Various causes of abdominal pain include, but are not limited to, indigestion after eating, gallstones and gallbladder inflammation (cholecystitis), pregnancy, gas, inflammatory bowel disease (ulcerative colitis and Crohn's disease), appendicitis, ulcers, gastritis, gastroesophageal reflux disease (GERD), pancreatitis, ...