What causes stomach pain accompanied by back pain?

Possible causes of stomach pain accompanied by back pain include: 1. Digestive system disorders: Such as gastritis, gastric ulcer, and duodenal ulcer. Pain caused by these conditions may radiate to the back, resulting in back pain. 2. Gastroesophageal reflux disease (GERD): This condition may be caused by dysfunction of the esophageal sphincter muscle, with symptoms including acid regurgitation, nausea, stomach pain, and referred back pain. 3. Cholecystitis: Pain caused by cholecystitis may also radiate to the back. Particularly with pain in the upper right abdomen, shoulder or back pain often occurs concurrently. 4. Indigestion: Improper diet or insufficient gastric motility may lead to indigestion. Food retention in the stomach may cause stomach pain that radiates to the back. 5. Other factors: Such as exposure to cold, improper diet, and long-term chronic fatigue may also lead to both stomach pain and back pain.