After patients develop high small bowel obstruction, in addition to obvious severe abdominal pain, the following more obvious symptoms may occur: 1. Patients will experience nausea, vomiting, or even frequent vomiting, loss of bowel sounds, and in severe cases, shock may occur. 2. Patients will feel generalized chills, cold extremities, and decreased blood pressure. 3. Patients may experience anal discharge and cessation of defecation. 4. Patients will lose their appetite, which may lead to malnutrition and wasting for a long time. When high small bowel obstruction occurs, it is important to go to the hospital in time for consultation to further identify the cause of the disease. The specific situation needs to be treated according to the cause, and the vast majority of high small bowel obstruction requires surgical treatment.