Rectal bleeding can refer to any blood that passes from your anus, although rectal bleeding is usually assumed to refer to bleeding from your<unk>  colon or rectum. Your rectum makes up the last few inches of your large intestine. Rectal bleeding may show up as blood in your stool, on the toilet paper or in the toilet bowl. Blood that results from rectal bleeding is usually bright red in color, but occasionally can be dark maroon.
Lower gastrointestinal bleeding
Upper gastrointestinal bleeding
Gastrointestinal varices
Internal bleeding
Oral ulcer
Gastrointestinal bleeding
Nosebleed
Colitis