Why is there blood when shit is wiped?

If there is no obvious anal bleeding at ordinary times, there will be a small amount of bleeding when wiping with paper during defecation. It is more common in hemorrhoids factors, including internal hemorrhoids, external hemorrhoids or mixed hemorrhoids. Normal bleeding is not much. If it is caused by anal fissure, the general bleeding color is bright red, and the amount is large, even combined with obvious pain in the anus. If you can't effectively regulate stool at ordinary times, such as stool induration or severe constipation, the mucosal damage of rectum and anus during defecation will also induce obvious mucosal bleeding, and you need to know the specific situation through anorectal endoscope.