What symptom is indicative of an intestinal obstruction?

Severe pain is a hallmark symptom of intestinal obstruction. This pain usually results from the accumulation of intestinal contents behind the blockage, leading to distention and increased pressure within the affected segment of the bowel. The obstruction can trigger strong peristaltic waves as the intestine attempts to push the contents through, which can cause intense, cramping pain. As the condition progresses, the pain may become more localized or constant, reflecting changes in the physiology of the bowel.

Other symptoms that might accompany intestinal obstruction include nausea, vomiting, inability to pass gas or stool, and abdominal distension. However, the key symptom that stands out in this context is the severe pain, which is directly related to the obstruction and its effects on intestinal function.