An intestinal obstruction occurs when food or stool cannot move through the intestines. The obstruction can be complete or partial. There are many causes. The most common are adhesions, hernias, cancers, and certain medicines.
Symptoms include
Severe abdominal pain or cramping
Vomiting
Bloating
Loud bowel sounds
Swelling of the abdomen
Inability to pass gas
Constipation
A complete intestinal obstruction is a medical emergency. It often requires surgery.
NIH: National Institute of Diabetes and Digestive and Kidney Diseases