Dumping syndrome is a group of symptoms that are most likely to develop if you've had surgery to remove all or part of your stomach, or if your stomach has been surgically bypassed to help lose weight. Also called rapid gastric emptying, dumping syndrome occurs when the undigested contents of your stomach move too rapidly into your small bowel. Common symptoms include abdominal cramps, nausea and diarrhea.
Most people with dumping syndrome experience symptoms soon after eating. In others, symptoms may occur one to three hours after eating. Some people experience both early and late symptoms.
Dumping syndrome is managed by adjusting your diet. In more-serious cases of dumping syndrome, you may need medications or surgery.