Why does poop bleed?

There are many reasons for bleeding during bowel movements. The most common reasons are anorectal diseases. For example, blood in the stool may be caused by hemorrhoids. There may also be upper gastrointestinal problems. The most common one is liver and gallbladder disease, which may also cause such bleeding. Other serious ones include rectal cancer and colon cancer, which may also cause blood in the stool. The symptoms of blood in the stool are different. For example, the blood in the stool caused by hemorrhoids is fresher.

Why does poop bleed?

1. Hemorrhoids and blood in the stool

The blood in the stool occurs during or after defecation. The blood is bright red and does not mix with the stool.

2. Anal fissure and blood in the stool

Blood red, falling or toilet paper wipe, anal pain, fresh anal pit.

3. Blood in stool due to digestive tract diseases

The stool is tarry or black-red, and the bleeding is mostly in the upper gastrointestinal tract; if the blood is pure red, it is mostly bleeding from lower gastrointestinal tract disease.

4. Rectal cancer and blood in the stool

The blood in the stool is bright red and attached to the surface of the stool in drops; in the late stage, it is accompanied by anorectal prolapse and general weight loss, increased frequency of bowel movements, and alternating constipation and diarrhea.

5. Rectal blood in stool, colon polyps

The blood is bright red, painless, and does not mix with stool. Ulcerative colitis and dysentery often have stools mixed with mucus or blood and pus, and are accompanied by symptoms such as lower abdominal pain, fever, and frequent bowel movements.

6. Blood in stool due to systemic diseases

In some rare infectious diseases such as leukemia, hemophilia, uremia, blood in feces, and at the same time, bleeding in other parts of the body.

Disorders that cause blood in stool

1. Hemorrhoids

Blood in the stool usually occurs during or after defecation, and appears as drops or sprays of blood. The blood is bright red and does not mix with the stool. Hemorrhoids cause bleeding in the stool. When patients with hemorrhoids defecate, fresh blood is often mixed with feces. Sometimes it is accompanied by prolapse of hemorrhoids, forming edema, and pain may occur when incarcerated. Severe hemorrhoids may lead to anemia.

2. Anal fissure

Anal fissures cause blood in the stool, which is bright red and has blood stains after dripping or wiping with toilet paper. There is also severe anal pain after defecation.

3. Rectal and Colon Polyps

The blood is bright red, painless, and does not mix with stool. Stool bleeding caused by rectal polyps and sigmoid colon polyps. There is fresh blood or dark red blood on the stool after defecation, and rectal polyps are occasionally accompanied by polyp prolapse.

4. Ulcerative colitis

The bleeding is mixed with mucus or appears as bloody and pus in the stool, accompanied by abdominal pain, fever, frequent bowel movements, etc.

Bleeding mixed with mucus or pus and blood in the stool, accompanied by abdominal pain, fever, frequent bowel movements, etc.

5. Rectal cancer

The blood is bright red or dark red and is in the form of drops attached to the surface of the stool. In the late stage, bloody and purulent stools often appear, accompanied by symptoms such as anorectal prolapse, weight loss, and changes in bowel habits. Bleeding in the stool caused by colon and rectal malignancy. The symptoms include mucus, pus and blood in the stool or dark red blood in the stool. In the late stage, the stool becomes swollen and has a foul odor.