what causes bleeding stools
So are pain and cramping, constipation or diarrhea, fatigue or weakness, narrow stools, nausea and vomiting. A bloody stool could be caused by gastritis, which is worsened by alcohol or caffeine consumption, and ... Intestinal ischemia is another potential cause of blood in stools ... Definition. A fecal occult blood test (FOBT) is a test to detect the presence of blood in the stool (feces). Reasons for Test. ... It may also used to detect blood in your stool if you are having abdominal pain, diarrhea, vomiting, decreased appetite, or other symptoms.