Hemorrhoids can be one of the reasons of blood in your stool. Generally, hemorrhoids result in red-bright blood in the stool after bowel movements or blood may be noted on the toilet paper. In very rare cases, bleeding may be massive due to hemorrhoids. Colon cancer can also cause bleeding in GI.
Hemorrhoids are diagnosed by examining patient history and through physical examination. Your doctor will ask questions about symptoms such as constipation, hard bowel movements, and straining while going to the toilet. He will try to look for other causes of rectal bleeding such as tumors, inflammatory bowel disease, and gastrointestinal bleeding to rule out other conditions.
Opinions of scientists are divided on what exactly causes hemorrhoids. It is believed that hemorrhoids are associated with chronic constipation, straining of anal muscles during bowel movements, and prolonged sitting or standing. These conditions interfere with blood flow to and from the area, causing enlargement of the vessels.
Hemorrhoids, also called piles, are swollen veins in the anus and lower region of the rectum. Hemorrhoids can occur due to a variety of reasons. Some reasons are straining during bowel movements and increased pressure on veins during pregnancy. Hemorrhoids may be located inside the rectum (called internal hemorrhoids), or under the skin (called external hemorrhoids).
Hemorrhoids (also called Piles) are blood vessels located in the muscles of the walls of the rectum and anus. They are normally located at the junction where small arteries merge. The presence of hemorrhoids is normal according to anatomy of the body, but most people refer them as an abnormal growth when they swell and cause problems such as bleeding.