Patient's question:
I have an itchy lower body, and my underwear is always yellow. What's going on? Why is there blood in my diarrhea?Doctor's answer:
First, it's necessary to determine whether it's upper gastrointestinal bleeding or lower gastrointestinal bleeding. If the stool is black and dark brown, this indicates upper gastrointestinal bleeding, commonly associated with conditions in the esophagus or stomach. If the stool is bright red, it's usually indicative of bleeding from the intestines or rectum (although if there's significant upper gastrointestinal bleeding, a large amount of blood can also appear bright red). Based on what you've described—diarrhea with bleeding—it's likely bleeding from the rectum or intestines. If there's no significant pain, the possibility of rectal polyps is relatively high. If accompanied by a heavy or dragging sensation in the rectum, or if there's prolapsed hemorrhoids, it's likely hemorrhoids. If there's also burning pain in the rectum, the possibility of anal fissures is higher. It's recommended to visit a colorectal specialist for an anorectal examination or a rectal scope examination.