Cause for obstruction in inguinal hernia?

INCARCERATED hernia. Any hernia may incarcerate and cause bowel obstruction. Incarceration is when the contents of a hernia 'gets stuck' and the blood flow to the area ceases causing the tissue to be at risk for dying (ischemia-infarct). Immediate surgery is indicated. The signs of bowel obstruction are: nausea, vomiting, abdominal pain, lack of gas passage..
Intestines. If you get intestines trapped in an inguinal hernia, the hernia may be considered incarcerated or strangulated. The hernia can become very painful, swollen, and develop intestinal blockage or obstruction with nausea and vomiting. This becomes an emergency condition.