Intestinal bleeding has been a week. What's the cause?

Intestinal bleeding has been a week may be caused by perianal disease, inflammatory bowel disease, intestinal tumors and other reasons.

1, perianal disease

hemorrhoids or anal fissure and other perianal disease is one of the common causes of intestinal bleeding, especially constipation or long-term diarrhea is more likely to occur.

2, inflammatory bowel disease

ulcerative colitis, Crohn's disease and other diseases can cause intestinal mucosal inflammation, resulting in intestinal bleeding.

3, intestinal tumors

may also lead to intestinal bleeding, including rectal tumors, colon tumors, etc., tumor itself can rupture bleeding, malignant tumors can invade the surrounding blood vessels to cause bleeding.