Extremely low blood pressure can develop in seconds (as with bleeding from trauma), in minutes (as with a peanut allergy), or over the course of hours (as with a worsening infection, such as toxic shock syndrome).
Eventually the contents start backing up.â. Here are the most common bowel obstruction symptoms: 1  Distended (swollen or bloated) abdomen. 2  Nausea. 3  Vomiting â color and texture of vomit may help diagnose the obstruction. 4  Change in bowel habits. 5  Constipation. 6  Very thin stools. 7  Blood in the stool, especially likely if cancer is a cause.
Symptoms depend on the location of the obstruction and whether it is partial or complete. Blockage in the small intestine causes intense episodes of abdominal pain and vomiting that may lead to dehydration and shock. Symptoms (intractable constipation and pain) develop more slowly in large-bowel (colon) obstruction. Blockage of the small intestine is much more common than blockage of the large intestine.