Why can anus have blood painless

Anal blood is not painful itching, may be due to internal hemorrhoids, rectal polyps, rectal cancer caused.

1, internal hemorrhoids: patients due to bad defecation habits caused by anal or rectal venous congestion swelling, the formation of internal hemorrhoids, bleeding during defecation, internal hemorrhoids prolapse and other symptoms. And internal hemorrhoids generally no pain, bleeding performance for the end of defecation after the blood covered in the stool surface, serious cases can be jet-like bleeding.

2, rectal polyps: rectal polyps belong to the rectal surface of the raised lesions, can lead to the symptoms of hematochezia, generally less hematochezia, intermittent, bright red or dark red.

3, rectal cancer: is a malignant tumor disease, patients often appear in the acute feeling or defecation does not feel much, and does not mix with feces, sometimes there will be mucus purulent blood stool.