Rectal bleeding or hemorrhaging from the intestines can be a manifestation of various ailments and illnesses[1][2][3]. The color of the blood discharged may provide an indication as to which part of the gastrointestinal tract is affected. Bright red blood usually denotes lower colon, rectum, or anus-related bleeding, whereas dark red or maroon-colored blood could imply that the hemorrhage has occurred higher up in either the colon or small intestine[4][1].
What are some possible causes of blood in the stool?
Rectal bleeding’s severity can vary significantly; therefore, it is crucial to seek medical attention if you experience such symptoms[5]. Here are some potential causes of rectal bleeding:
- Hemorrhoids: Swollen veins inside the rectum or anus. They are very common and the most common cause of rectal bleeding[4][2].
- Anal fissures: Small tears in the lining of the anus that can lead to bleeding and pain when passing stools. Tears can occur because of constipation or during childbirth[2][3].
- Angiodysplasia: Enlarged blood vessels develop in the intestine. They can become fragile, break, and bleed[2].
- Ulcers: An erosion in the digestive tract that can worsen and cause bleeding. Black, tarry stools may occur if an ulcer is present[5].
- Anal or colorectal polyps: Growth that can appear in many places throughout the body. If polyps develop in the intestine, they can bleed. Polyps aren’t cancerous, but some can become malignant in time[2].
- Infections: Infections in the digestive tract can cause rectal bleeding[1].
- Inflammatory bowel disease: Inflammation of the colon (large intestine) and rectum (final section of the colon, before the anus) [5][3].
- Cancer: Rectal bleeding can be a sign of bowel cancer or a precancerous polyp[5].
It is important to seek medical attention if you experience rectal bleeding, especially if it is accompanied by severe diarrhea, pencil-sized stools, nausea, vomiting, rectal trauma, irregular heartbeat, fainting spells, or difficulty breathing[3].
Citations:
[1] https://www.medicinenet.com/blood_in_the_stool_rectal_bleeding/article.htm
[2] https://www.healthline.com/health/rectal-bleeding
[3] https://www.emedicinehealth.com/rectal_bleeding/article_em.htm
[4] https://my.clevelandclinic.org/health/symptoms/14612-rectal-bleeding
[5] https://www.healthdirect.gov.au/rectal-bleeding